mirror of https://github.com/citusdata/citus.git
3343 lines
173 KiB
Plaintext
3343 lines
173 KiB
Plaintext
CREATE SCHEMA query_single_shard_table;
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SET search_path TO query_single_shard_table;
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SET citus.next_shard_id TO 1620000;
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SET citus.shard_count TO 32;
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SET citus.shard_replication_factor TO 1;
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SET client_min_messages TO NOTICE;
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CREATE TABLE nullkey_c1_t1(a int, b int);
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CREATE TABLE nullkey_c1_t2(a int, b int);
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SELECT create_distributed_table('nullkey_c1_t1', null, colocate_with=>'none');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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SELECT create_distributed_table('nullkey_c1_t2', null, colocate_with=>'nullkey_c1_t1');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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INSERT INTO nullkey_c1_t1 SELECT i, i FROM generate_series(1, 8) i;
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INSERT INTO nullkey_c1_t2 SELECT i, i FROM generate_series(2, 7) i;
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CREATE TABLE nullkey_c2_t1(a int, b int);
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CREATE TABLE nullkey_c2_t2(a int, b int);
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SELECT create_distributed_table('nullkey_c2_t1', null, colocate_with=>'none');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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SELECT create_distributed_table('nullkey_c2_t2', null, colocate_with=>'nullkey_c2_t1', distribution_type=>null);
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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INSERT INTO nullkey_c2_t1 SELECT i, i FROM generate_series(2, 7) i;
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INSERT INTO nullkey_c2_t2 SELECT i, i FROM generate_series(1, 8) i;
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CREATE TABLE nullkey_c3_t1(a int, b int);
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SELECT create_distributed_table('nullkey_c3_t1', null, colocate_with=>'none');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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INSERT INTO nullkey_c3_t1 SELECT i, i FROM generate_series(1, 8) i;
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RESET citus.shard_replication_factor;
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CREATE TABLE reference_table(a int, b int);
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SELECT create_reference_table('reference_table');
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create_reference_table
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---------------------------------------------------------------------
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(1 row)
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INSERT INTO reference_table SELECT i, i FROM generate_series(0, 5) i;
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CREATE TABLE distributed_table(a int, b int);
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SELECT create_distributed_table('distributed_table', 'a');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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INSERT INTO distributed_table SELECT i, i FROM generate_series(3, 8) i;
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CREATE TABLE citus_local_table(a int, b int);
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SELECT citus_add_local_table_to_metadata('citus_local_table');
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citus_add_local_table_to_metadata
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---------------------------------------------------------------------
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(1 row)
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INSERT INTO citus_local_table SELECT i, i FROM generate_series(0, 10) i;
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CREATE TABLE postgres_local_table(a int, b int);
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INSERT INTO postgres_local_table SELECT i, i FROM generate_series(5, 10) i;
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CREATE TABLE articles_hash (
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id bigint NOT NULL,
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author_id bigint NOT NULL,
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title varchar(20) NOT NULL,
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word_count integer
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);
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INSERT INTO articles_hash VALUES ( 4, 4, 'altdorfer', 14551),( 5, 5, 'aruru', 11389),
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(13, 3, 'aseyev', 2255),(15, 5, 'adversa', 3164),
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(18, 8, 'assembly', 911),(19, 9, 'aubergiste', 4981),
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(28, 8, 'aerophyte', 5454),(29, 9, 'amateur', 9524),
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(42, 2, 'ausable', 15885),(43, 3, 'affixal', 12723),
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(49, 9, 'anyone', 2681),(50, 10, 'anjanette', 19519);
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SET citus.shard_replication_factor TO 1;
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SELECT create_distributed_table('articles_hash', null, colocate_with=>'none');
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NOTICE: Copying data from local table...
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NOTICE: copying the data has completed
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DETAIL: The local data in the table is no longer visible, but is still on disk.
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HINT: To remove the local data, run: SELECT truncate_local_data_after_distributing_table($$query_single_shard_table.articles_hash$$)
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CREATE TABLE raw_events_first (user_id int, time timestamp, value_1 int, value_2 int, value_3 float, value_4 bigint, UNIQUE(user_id, value_1));
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SELECT create_distributed_table('raw_events_first', null, colocate_with=>'none', distribution_type=>null);
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CREATE TABLE raw_events_second (user_id int, time timestamp, value_1 int, value_2 int, value_3 float, value_4 bigint, UNIQUE(user_id, value_1));
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SELECT create_distributed_table('raw_events_second', null, colocate_with=>'raw_events_first', distribution_type=>null);
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CREATE TABLE agg_events (user_id int, value_1_agg int, value_2_agg int, value_3_agg float, value_4_agg bigint, agg_time timestamp, UNIQUE(user_id, value_1_agg));
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SELECT create_distributed_table('agg_events', null, colocate_with=>'raw_events_first', distribution_type=>null);
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CREATE TABLE users_ref_table (user_id int);
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SELECT create_reference_table('users_ref_table');
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create_reference_table
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---------------------------------------------------------------------
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(1 row)
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INSERT INTO raw_events_first VALUES (1, '1970-01-01', 10, 100, 1000.1, 10000), (3, '1971-01-01', 30, 300, 3000.1, 30000),
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(5, '1972-01-01', 50, 500, 5000.1, 50000), (2, '1973-01-01', 20, 200, 2000.1, 20000),
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(4, '1974-01-01', 40, 400, 4000.1, 40000), (6, '1975-01-01', 60, 600, 6000.1, 60000);
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CREATE TABLE modify_fast_path(key int, value_1 int, value_2 text);
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SELECT create_distributed_table('modify_fast_path', null);
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CREATE TABLE modify_fast_path_reference(key int, value_1 int, value_2 text);
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SELECT create_reference_table('modify_fast_path_reference');
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create_reference_table
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---------------------------------------------------------------------
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(1 row)
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CREATE TABLE bigserial_test (x int, y int, z bigserial);
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SELECT create_distributed_table('bigserial_test', null);
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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RESET citus.shard_replication_factor;
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CREATE TABLE append_table (text_col text, a int);
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SELECT create_distributed_table('append_table', 'a', 'append');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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SELECT master_create_empty_shard('append_table') AS shardid1 \gset
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SELECT master_create_empty_shard('append_table') AS shardid2 \gset
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SELECT master_create_empty_shard('append_table') AS shardid3 \gset
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COPY append_table (text_col, a) FROM STDIN WITH (format 'csv', append_to_shard :shardid1);
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COPY append_table (text_col, a) FROM STDIN WITH (format 'csv', append_to_shard :shardid2);
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CREATE TABLE range_table(a int, b int);
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SELECT create_distributed_table('range_table', 'a', 'range');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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CALL public.create_range_partitioned_shards('range_table', '{"0","25"}','{"24","49"}');
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INSERT INTO range_table VALUES (0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 6), (6, 50);
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\set users_table_data_file :abs_srcdir '/data/users_table.data'
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\set events_table_data_file :abs_srcdir '/data/events_table.data'
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SET citus.shard_replication_factor TO 1;
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CREATE TABLE users_table (user_id int, time timestamp, value_1 int, value_2 int, value_3 float, value_4 bigint);
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SELECT create_distributed_table('users_table', null, colocate_with=>'none');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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\set client_side_copy_command '\\copy users_table FROM ' :'users_table_data_file' ' WITH CSV;'
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:client_side_copy_command
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CREATE TABLE non_colocated_users_table (id int, value int);
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SELECT create_distributed_table('non_colocated_users_table', null, colocate_with => 'none');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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INSERT INTO non_colocated_users_table (id, value) VALUES(1, 2),(2, 3),(3,4);
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CREATE TABLE colocated_events_table (user_id int, time timestamp, event_type int, value_2 int, value_3 float, value_4 bigint);
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SELECT create_distributed_table('colocated_events_table', null, colocate_with=>'users_table');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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\set client_side_copy_command '\\copy colocated_events_table FROM ' :'events_table_data_file' ' WITH CSV;'
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:client_side_copy_command
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CREATE TABLE non_colocated_events_table (user_id int, time timestamp, event_type int, value_2 int, value_3 float, value_4 bigint);
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SELECT create_distributed_table('non_colocated_events_table', null, colocate_with=>'non_colocated_users_table');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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\set client_side_copy_command '\\copy non_colocated_events_table FROM ' :'events_table_data_file' ' WITH CSV;'
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:client_side_copy_command
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CREATE TABLE users_table_local AS SELECT * FROM users_table;
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CREATE TABLE colocated_users_table (id int, value int);
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SELECT create_distributed_table('colocated_users_table', null, colocate_with => 'users_table');
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create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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INSERT INTO colocated_users_table (id, value) VALUES(1, 2),(2, 3),(3,4);
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CREATE TABLE users_reference_table (like users_table including all);
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SELECT create_reference_table('users_reference_table');
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create_reference_table
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---------------------------------------------------------------------
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(1 row)
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CREATE TABLE events_reference_table (like colocated_events_table including all);
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SELECT create_reference_table('events_reference_table');
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create_reference_table
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---------------------------------------------------------------------
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(1 row)
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CREATE FUNCTION func() RETURNS TABLE (id int, value int) AS $$
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SELECT 1, 2
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$$ LANGUAGE SQL;
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SET client_min_messages to DEBUG2;
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-- simple insert
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INSERT INTO nullkey_c1_t1 VALUES (1,2), (2,2), (3,4);
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DEBUG: Creating router plan
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INSERT INTO nullkey_c1_t2 VALUES (1,3), (3,4), (5,1), (6,2);
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DEBUG: Creating router plan
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INSERT INTO nullkey_c2_t1 VALUES (1,0), (2,5), (4,3), (5,2);
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DEBUG: Creating router plan
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INSERT INTO nullkey_c2_t2 VALUES (2,4), (3,2), (5,2), (7,4);
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DEBUG: Creating router plan
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-- simple select
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SELECT * FROM nullkey_c1_t1 ORDER BY 1,2;
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DEBUG: Distributed planning for a fast-path router query
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DEBUG: Creating router plan
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a | b
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---------------------------------------------------------------------
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1 | 1
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1 | 2
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2 | 2
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2 | 2
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3 | 3
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3 | 4
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4 | 4
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5 | 5
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6 | 6
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7 | 7
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8 | 8
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(11 rows)
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-- for update / share
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SELECT * FROM modify_fast_path WHERE key = 1 FOR UPDATE;
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DEBUG: Distributed planning for a fast-path router query
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DEBUG: Creating router plan
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key | value_1 | value_2
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---------------------------------------------------------------------
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(0 rows)
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SELECT * FROM modify_fast_path WHERE key = 1 FOR SHARE;
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DEBUG: Distributed planning for a fast-path router query
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DEBUG: Creating router plan
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key | value_1 | value_2
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---------------------------------------------------------------------
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(0 rows)
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SELECT * FROM modify_fast_path FOR UPDATE;
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DEBUG: Distributed planning for a fast-path router query
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DEBUG: Creating router plan
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key | value_1 | value_2
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---------------------------------------------------------------------
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(0 rows)
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SELECT * FROM modify_fast_path FOR SHARE;
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DEBUG: Distributed planning for a fast-path router query
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DEBUG: Creating router plan
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key | value_1 | value_2
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---------------------------------------------------------------------
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(0 rows)
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-- cartesian product with different table types
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-- with other table types
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SELECT COUNT(*) FROM distributed_table d1, nullkey_c1_t1;
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DEBUG: Router planner cannot handle multi-shard select queries
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ERROR: cannot perform distributed planning on this query
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DETAIL: Cartesian products are currently unsupported
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SELECT COUNT(*) FROM reference_table d1, nullkey_c1_t1;
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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66
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(1 row)
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SELECT COUNT(*) FROM citus_local_table d1, nullkey_c1_t1;
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DEBUG: Local tables cannot be used in distributed queries.
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DEBUG: Wrapping relation "citus_local_table" "d1" to a subquery
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DEBUG: Distributed planning for a fast-path router query
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DEBUG: Creating router plan
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DEBUG: generating subplan XXX_1 for subquery SELECT NULL::integer AS "dummy-1" FROM query_single_shard_table.citus_local_table d1 WHERE true
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DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT NULL::integer AS a, NULL::integer AS b FROM (SELECT intermediate_result."dummy-1" FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result("dummy-1" integer)) d1_1) d1, query_single_shard_table.nullkey_c1_t1
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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121
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(1 row)
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SELECT COUNT(*) FROM postgres_local_table d1, nullkey_c1_t1;
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DEBUG: Local tables cannot be used in distributed queries.
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DEBUG: Wrapping relation "postgres_local_table" "d1" to a subquery
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DEBUG: generating subplan XXX_1 for subquery SELECT NULL::integer AS "dummy-1" FROM query_single_shard_table.postgres_local_table d1 WHERE true
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DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT NULL::integer AS a, NULL::integer AS b FROM (SELECT intermediate_result."dummy-1" FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result("dummy-1" integer)) d1_1) d1, query_single_shard_table.nullkey_c1_t1
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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66
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(1 row)
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-- with a colocated single-shard table
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SELECT COUNT(*) FROM nullkey_c1_t1 d1, nullkey_c1_t2;
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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110
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(1 row)
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-- with a non-colocated single-shard table
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SELECT COUNT(*) FROM nullkey_c1_t1 d1, nullkey_c2_t1;
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DEBUG: router planner does not support queries that reference non-colocated distributed tables
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ERROR: cannot perform distributed planning on this query
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DETAIL: Cartesian products are currently unsupported
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-- First, show that nullkey_c1_t1 and nullkey_c3_t1 are not colocated.
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SELECT
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(SELECT colocationid FROM pg_dist_partition WHERE logicalrelid = 'query_single_shard_table.nullkey_c1_t1'::regclass) !=
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(SELECT colocationid FROM pg_dist_partition WHERE logicalrelid = 'query_single_shard_table.nullkey_c3_t1'::regclass);
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?column?
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---------------------------------------------------------------------
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t
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(1 row)
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-- Now verify that we can join them via router planner because it doesn't care
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-- about whether two tables are colocated or not but physical location of shards
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-- when citus.enable_non_colocated_router_query_pushdown is set to on.
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SET citus.enable_non_colocated_router_query_pushdown TO ON;
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SELECT COUNT(*) FROM nullkey_c1_t1 JOIN nullkey_c3_t1 USING(a);
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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11
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(1 row)
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SET citus.enable_non_colocated_router_query_pushdown TO OFF;
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SET citus.enable_repartition_joins TO ON;
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SET client_min_messages TO DEBUG1;
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SELECT COUNT(*) FROM nullkey_c1_t1 JOIN nullkey_c3_t1 USING(a);
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count
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---------------------------------------------------------------------
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11
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(1 row)
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SET client_min_messages TO DEBUG2;
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SET citus.enable_repartition_joins TO OFF;
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RESET citus.enable_non_colocated_router_query_pushdown;
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-- colocated join between single-shard tables
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SELECT COUNT(*) FROM nullkey_c1_t1 JOIN nullkey_c1_t2 USING(a);
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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14
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(1 row)
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SELECT COUNT(*) FROM nullkey_c1_t1 LEFT JOIN nullkey_c1_t2 USING(a);
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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15
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(1 row)
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SELECT COUNT(*) FROM nullkey_c1_t1 FULL JOIN nullkey_c1_t2 USING(a);
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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15
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(1 row)
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SELECT COUNT(*) FROM nullkey_c1_t1 t1
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LEFT JOIN LATERAL (
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SELECT * FROM nullkey_c1_t2 t2 WHERE t2.b > t1.a
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) q USING(a);
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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11
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(1 row)
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SELECT COUNT(*) FROM nullkey_c1_t1 t1
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JOIN LATERAL (
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SELECT * FROM nullkey_c1_t2 t2 WHERE t2.b > t1.a
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) q USING(a);
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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4
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(1 row)
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SELECT COUNT(*) FROM nullkey_c1_t1 t1
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WHERE EXISTS (
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SELECT * FROM nullkey_c1_t2 t2 WHERE t2.b > t1.a
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);
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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9
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(1 row)
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SELECT COUNT(*) FROM nullkey_c1_t1 t1
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WHERE t1.b IN (
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SELECT b+1 FROM nullkey_c1_t2 t2 WHERE t2.b = t1.a
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);
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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2
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(1 row)
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SELECT COUNT(*) FROM nullkey_c1_t1 t1
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WHERE t1.b NOT IN (
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SELECT a FROM nullkey_c1_t2 t2 WHERE t2.b > t1.a
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);
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DEBUG: Creating router plan
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count
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---------------------------------------------------------------------
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7
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(1 row)
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-- non-colocated inner joins between single-shard tables
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SET client_min_messages to DEBUG1;
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SET citus.enable_repartition_joins TO ON;
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SELECT * FROM nullkey_c1_t1 JOIN nullkey_c2_t1 USING(a) ORDER BY 1,2,3;
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a | b | b
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---------------------------------------------------------------------
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1 | 1 | 0
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1 | 2 | 0
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2 | 2 | 2
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2 | 2 | 2
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2 | 2 | 5
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2 | 2 | 5
|
|
3 | 3 | 3
|
|
3 | 4 | 3
|
|
4 | 4 | 3
|
|
4 | 4 | 4
|
|
5 | 5 | 2
|
|
5 | 5 | 5
|
|
6 | 6 | 6
|
|
7 | 7 | 7
|
|
(14 rows)
|
|
|
|
SELECT * FROM (SELECT * FROM nullkey_c1_t1) nullkey_c1_t1 JOIN nullkey_c2_t1 USING(a) ORDER BY 1,2,3;
|
|
a | b | b
|
|
---------------------------------------------------------------------
|
|
1 | 1 | 0
|
|
1 | 2 | 0
|
|
2 | 2 | 2
|
|
2 | 2 | 2
|
|
2 | 2 | 5
|
|
2 | 2 | 5
|
|
3 | 3 | 3
|
|
3 | 4 | 3
|
|
4 | 4 | 3
|
|
4 | 4 | 4
|
|
5 | 5 | 2
|
|
5 | 5 | 5
|
|
6 | 6 | 6
|
|
7 | 7 | 7
|
|
(14 rows)
|
|
|
|
SELECT * FROM nullkey_c2_t1 JOIN (SELECT * FROM nullkey_c1_t1) nullkey_c1_t1 USING(a) ORDER BY 1,2,3;
|
|
a | b | b
|
|
---------------------------------------------------------------------
|
|
1 | 0 | 1
|
|
1 | 0 | 2
|
|
2 | 2 | 2
|
|
2 | 2 | 2
|
|
2 | 5 | 2
|
|
2 | 5 | 2
|
|
3 | 3 | 3
|
|
3 | 3 | 4
|
|
4 | 3 | 4
|
|
4 | 4 | 4
|
|
5 | 2 | 5
|
|
5 | 5 | 5
|
|
6 | 6 | 6
|
|
7 | 7 | 7
|
|
(14 rows)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
JOIN LATERAL (
|
|
SELECT * FROM nullkey_c2_t2 t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
count
|
|
---------------------------------------------------------------------
|
|
2
|
|
(1 row)
|
|
|
|
SET citus.enable_repartition_joins TO OFF;
|
|
SET client_min_messages to DEBUG2;
|
|
-- non-colocated outer joins between single-shard tables
|
|
SELECT * FROM nullkey_c1_t1 LEFT JOIN nullkey_c2_t2 USING(a) ORDER BY 1,2,3 LIMIT 4;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: push down of limit count: 4
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: nullkey_c1_t1 and nullkey_c2_t2 are not colocated
|
|
SELECT * FROM nullkey_c1_t1 FULL JOIN nullkey_c2_t2 USING(a) ORDER BY 1,2,3 LIMIT 4;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: push down of limit count: 4
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: nullkey_c1_t1 and nullkey_c2_t2 are not colocated
|
|
SELECT * FROM nullkey_c1_t1 t1
|
|
LEFT JOIN LATERAL (
|
|
SELECT * FROM nullkey_c2_t2 t2 WHERE t2.b > t1.a
|
|
) q USING(a) ORDER BY 1,2,3 OFFSET 3 LIMIT 4;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: push down of limit count: 7
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: nullkey_c1_t1 and nullkey_c2_t2 are not colocated
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
LEFT JOIN LATERAL (
|
|
SELECT * FROM nullkey_c2_t2 t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: nullkey_c1_t1 and nullkey_c2_t2 are not colocated
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE EXISTS (
|
|
SELECT * FROM nullkey_c2_t2 t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: nullkey_c2_t2 and nullkey_c1_t1 are not colocated
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE t1.b IN (
|
|
SELECT b+1 FROM nullkey_c2_t2 t2 WHERE t2.b = t1.a
|
|
);
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: nullkey_c2_t2 and nullkey_c1_t1 are not colocated
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE t1.b NOT IN (
|
|
SELECT a FROM nullkey_c2_t2 t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: nullkey_c2_t2 and nullkey_c1_t1 are not colocated
|
|
-- join with a reference table
|
|
SELECT COUNT(*) FROM nullkey_c1_t1, reference_table WHERE nullkey_c1_t1.a = reference_table.a;
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
8
|
|
(1 row)
|
|
|
|
WITH cte_1 AS
|
|
(SELECT * FROM nullkey_c1_t1, reference_table WHERE nullkey_c1_t1.a = reference_table.a ORDER BY 1,2,3,4 FOR UPDATE)
|
|
SELECT COUNT(*) FROM cte_1;
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
8
|
|
(1 row)
|
|
|
|
-- join with postgres / citus local tables
|
|
SELECT * FROM nullkey_c1_t1 JOIN postgres_local_table USING(a) ORDER BY 1,2,3;
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "postgres_local_table" to a subquery
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.postgres_local_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT nullkey_c1_t1.a, nullkey_c1_t1.b, postgres_local_table.b FROM (query_single_shard_table.nullkey_c1_t1 JOIN (SELECT postgres_local_table_1.a, postgres_local_table_1.b FROM (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) postgres_local_table_1) postgres_local_table USING (a)) ORDER BY nullkey_c1_t1.a, nullkey_c1_t1.b, postgres_local_table.b
|
|
DEBUG: Creating router plan
|
|
a | b | b
|
|
---------------------------------------------------------------------
|
|
5 | 5 | 5
|
|
6 | 6 | 6
|
|
7 | 7 | 7
|
|
8 | 8 | 8
|
|
(4 rows)
|
|
|
|
SELECT * FROM nullkey_c1_t1 JOIN citus_local_table USING(a) ORDER BY 1,2,3;
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "citus_local_table" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.citus_local_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT nullkey_c1_t1.a, nullkey_c1_t1.b, citus_local_table.b FROM (query_single_shard_table.nullkey_c1_t1 JOIN (SELECT citus_local_table_1.a, citus_local_table_1.b FROM (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) citus_local_table_1) citus_local_table USING (a)) ORDER BY nullkey_c1_t1.a, nullkey_c1_t1.b, citus_local_table.b
|
|
DEBUG: Creating router plan
|
|
a | b | b
|
|
---------------------------------------------------------------------
|
|
1 | 1 | 1
|
|
1 | 2 | 1
|
|
2 | 2 | 2
|
|
2 | 2 | 2
|
|
3 | 3 | 3
|
|
3 | 4 | 3
|
|
4 | 4 | 4
|
|
5 | 5 | 5
|
|
6 | 6 | 6
|
|
7 | 7 | 7
|
|
8 | 8 | 8
|
|
(11 rows)
|
|
|
|
SET citus.local_table_join_policy TO 'prefer-distributed';
|
|
SELECT * FROM nullkey_c1_t1 JOIN citus_local_table USING(a) ORDER BY 1,2,3;
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "nullkey_c1_t1" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.nullkey_c1_t1 WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT nullkey_c1_t1.a, nullkey_c1_t1.b, citus_local_table.b FROM ((SELECT nullkey_c1_t1_1.a, nullkey_c1_t1_1.b FROM (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) nullkey_c1_t1_1) nullkey_c1_t1 JOIN query_single_shard_table.citus_local_table USING (a)) ORDER BY nullkey_c1_t1.a, nullkey_c1_t1.b, citus_local_table.b
|
|
DEBUG: Creating router plan
|
|
a | b | b
|
|
---------------------------------------------------------------------
|
|
1 | 1 | 1
|
|
1 | 2 | 1
|
|
2 | 2 | 2
|
|
2 | 2 | 2
|
|
3 | 3 | 3
|
|
3 | 4 | 3
|
|
4 | 4 | 4
|
|
5 | 5 | 5
|
|
6 | 6 | 6
|
|
7 | 7 | 7
|
|
8 | 8 | 8
|
|
(11 rows)
|
|
|
|
RESET citus.local_table_join_policy;
|
|
-- join with a distributed table
|
|
SET citus.enable_repartition_joins TO ON;
|
|
SET client_min_messages TO DEBUG1;
|
|
SELECT * FROM distributed_table d1 JOIN nullkey_c1_t1 USING(a) ORDER BY 1,2,3;
|
|
a | b | b
|
|
---------------------------------------------------------------------
|
|
3 | 3 | 3
|
|
3 | 3 | 4
|
|
4 | 4 | 4
|
|
5 | 5 | 5
|
|
6 | 6 | 6
|
|
7 | 7 | 7
|
|
8 | 8 | 8
|
|
(7 rows)
|
|
|
|
SELECT * FROM (SELECT * FROM distributed_table) d1 JOIN nullkey_c1_t1 USING(a) ORDER BY 1,2,3;
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.distributed_table
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT d1.a, d1.b, nullkey_c1_t1.b FROM ((SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) d1 JOIN query_single_shard_table.nullkey_c1_t1 USING (a)) ORDER BY d1.a, d1.b, nullkey_c1_t1.b
|
|
a | b | b
|
|
---------------------------------------------------------------------
|
|
3 | 3 | 3
|
|
3 | 3 | 4
|
|
4 | 4 | 4
|
|
5 | 5 | 5
|
|
6 | 6 | 6
|
|
7 | 7 | 7
|
|
8 | 8 | 8
|
|
(7 rows)
|
|
|
|
SELECT * FROM nullkey_c1_t1 JOIN (SELECT * FROM distributed_table) d1 USING(a) ORDER BY 1,2,3;
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.distributed_table
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT nullkey_c1_t1.a, nullkey_c1_t1.b, d1.b FROM (query_single_shard_table.nullkey_c1_t1 JOIN (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) d1 USING (a)) ORDER BY nullkey_c1_t1.a, nullkey_c1_t1.b, d1.b
|
|
a | b | b
|
|
---------------------------------------------------------------------
|
|
3 | 3 | 3
|
|
3 | 4 | 3
|
|
4 | 4 | 4
|
|
5 | 5 | 5
|
|
6 | 6 | 6
|
|
7 | 7 | 7
|
|
8 | 8 | 8
|
|
(7 rows)
|
|
|
|
SELECT * FROM distributed_table d1 JOIN (SELECT * FROM nullkey_c1_t1) nullkey_c1_t1 USING(a) ORDER BY 1,2,3;
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.nullkey_c1_t1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT d1.a, d1.b, nullkey_c1_t1.b FROM (query_single_shard_table.distributed_table d1 JOIN (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) nullkey_c1_t1 USING (a)) ORDER BY d1.a, d1.b, nullkey_c1_t1.b
|
|
a | b | b
|
|
---------------------------------------------------------------------
|
|
3 | 3 | 3
|
|
3 | 3 | 4
|
|
4 | 4 | 4
|
|
5 | 5 | 5
|
|
6 | 6 | 6
|
|
7 | 7 | 7
|
|
8 | 8 | 8
|
|
(7 rows)
|
|
|
|
SELECT * FROM (SELECT * FROM nullkey_c1_t1) nullkey_c1_t1 JOIN distributed_table d1 USING(a) ORDER BY 1,2,3;
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.nullkey_c1_t1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT nullkey_c1_t1.a, nullkey_c1_t1.b, d1.b FROM ((SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) nullkey_c1_t1 JOIN query_single_shard_table.distributed_table d1 USING (a)) ORDER BY nullkey_c1_t1.a, nullkey_c1_t1.b, d1.b
|
|
a | b | b
|
|
---------------------------------------------------------------------
|
|
3 | 3 | 3
|
|
3 | 4 | 3
|
|
4 | 4 | 4
|
|
5 | 5 | 5
|
|
6 | 6 | 6
|
|
7 | 7 | 7
|
|
8 | 8 | 8
|
|
(7 rows)
|
|
|
|
-- test joins with non-colocated distributed tables, by using subqueries
|
|
SELECT * FROM nullkey_c1_t1 t1 JOIN (SELECT * FROM distributed_table) t2 USING (a) JOIN (SELECT * FROM nullkey_c1_t2) t3 USING (a) ORDER BY 1,2,3,4 LIMIT 1;
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.distributed_table
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT t1.a, t1.b, t2.b, t3.b FROM ((query_single_shard_table.nullkey_c1_t1 t1 JOIN (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) t2 USING (a)) JOIN (SELECT nullkey_c1_t2.a, nullkey_c1_t2.b FROM query_single_shard_table.nullkey_c1_t2) t3 USING (a)) ORDER BY t1.a, t1.b, t2.b, t3.b LIMIT 1
|
|
a | b | b | b
|
|
---------------------------------------------------------------------
|
|
3 | 3 | 3 | 3
|
|
(1 row)
|
|
|
|
SELECT * FROM (SELECT * FROM nullkey_c1_t1) t1 JOIN nullkey_c2_t1 t2 USING (a) JOIN (SELECT * FROM nullkey_c1_t2) t3 USING (a) ORDER BY 1,2,3,4 LIMIT 1;
|
|
DEBUG: push down of limit count: 1
|
|
a | b | b | b
|
|
---------------------------------------------------------------------
|
|
1 | 1 | 0 | 3
|
|
(1 row)
|
|
|
|
SELECT * FROM distributed_table t1 JOIN (SELECT * FROM nullkey_c1_t1) t2 USING (a) JOIN (SELECT b as a FROM distributed_table) t3 USING (a) ORDER BY 1,2,3 LIMIT 1;
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.nullkey_c1_t1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT b AS a FROM query_single_shard_table.distributed_table
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT t1.a, t1.b, t2.b FROM ((query_single_shard_table.distributed_table t1 JOIN (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) t2 USING (a)) JOIN (SELECT intermediate_result.a FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) t3 USING (a)) ORDER BY t1.a, t1.b, t2.b LIMIT 1
|
|
DEBUG: push down of limit count: 1
|
|
a | b | b
|
|
---------------------------------------------------------------------
|
|
3 | 3 | 3
|
|
(1 row)
|
|
|
|
SELECT * FROM (SELECT * FROM nullkey_c2_t1) t1 JOIN nullkey_c1_t1 t2 USING (a) JOIN (SELECT * FROM nullkey_c2_t1) t3 USING (a) ORDER BY 1,2,3,4 LIMIT 1;
|
|
DEBUG: push down of limit count: 1
|
|
a | b | b | b
|
|
---------------------------------------------------------------------
|
|
1 | 0 | 1 | 0
|
|
(1 row)
|
|
|
|
SELECT * FROM nullkey_c1_t1 t1 JOIN (SELECT * FROM distributed_table) t2 USING (a) JOIN (SELECT * FROM distributed_table) t3 USING (a) ORDER BY 1,2,3,4 LIMIT 1;
|
|
DEBUG: push down of limit count: 1
|
|
a | b | b | b
|
|
---------------------------------------------------------------------
|
|
3 | 3 | 3 | 3
|
|
(1 row)
|
|
|
|
SELECT * FROM (SELECT * FROM nullkey_c1_t1) t1 JOIN nullkey_c2_t1 t2 USING (a) JOIN (SELECT * FROM nullkey_c2_t1) t3 USING (a) ORDER BY 1,2,3,4 LIMIT 1;
|
|
DEBUG: push down of limit count: 1
|
|
a | b | b | b
|
|
---------------------------------------------------------------------
|
|
1 | 1 | 0 | 0
|
|
(1 row)
|
|
|
|
SELECT * FROM distributed_table t1 JOIN (SELECT * FROM nullkey_c1_t1) t2 USING (a) JOIN (SELECT * FROM nullkey_c1_t1) t3 USING (a) ORDER BY 1,2,3,4 LIMIT 1;
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.nullkey_c1_t1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT a, b FROM query_single_shard_table.nullkey_c1_t1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT t1.a, t1.b, t2.b, t3.b FROM ((query_single_shard_table.distributed_table t1 JOIN (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) t2 USING (a)) JOIN (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) t3 USING (a)) ORDER BY t1.a, t1.b, t2.b, t3.b LIMIT 1
|
|
DEBUG: push down of limit count: 1
|
|
a | b | b | b
|
|
---------------------------------------------------------------------
|
|
3 | 3 | 3 | 3
|
|
(1 row)
|
|
|
|
SELECT * FROM (SELECT * FROM nullkey_c2_t1) t1 JOIN nullkey_c1_t1 t2 USING (a) JOIN (SELECT * FROM nullkey_c1_t1) t3 USING (a) ORDER BY 1,2,3,4 LIMIT 1;
|
|
DEBUG: push down of limit count: 1
|
|
a | b | b | b
|
|
---------------------------------------------------------------------
|
|
1 | 0 | 1 | 1
|
|
(1 row)
|
|
|
|
SELECT * FROM nullkey_c1_t1 t1 JOIN (SELECT * FROM nullkey_c1_t1) t2 USING (a) JOIN distributed_table t3 USING (a) ORDER BY 1,2,3,4 LIMIT 1;
|
|
DEBUG: push down of limit count: 1
|
|
a | b | b | b
|
|
---------------------------------------------------------------------
|
|
3 | 3 | 3 | 3
|
|
(1 row)
|
|
|
|
SELECT * FROM nullkey_c1_t1 t1 JOIN nullkey_c1_t1 t2 USING (a) JOIN nullkey_c2_t1 t3 USING (a) ORDER BY 1,2,3,4 LIMIT 1;
|
|
DEBUG: push down of limit count: 1
|
|
a | b | b | b
|
|
---------------------------------------------------------------------
|
|
1 | 1 | 1 | 0
|
|
(1 row)
|
|
|
|
SELECT * FROM (SELECT * FROM distributed_table) t1 JOIN distributed_table t2 USING (a) JOIN (SELECT * FROM nullkey_c1_t1) t3 USING (a) ORDER BY 1,2,3,4 LIMIT 1;
|
|
DEBUG: push down of limit count: 1
|
|
a | b | b | b
|
|
---------------------------------------------------------------------
|
|
3 | 3 | 3 | 3
|
|
(1 row)
|
|
|
|
SELECT * FROM (SELECT * FROM nullkey_c2_t1) t1 JOIN nullkey_c2_t1 t2 USING (a) JOIN (SELECT * FROM nullkey_c1_t1) t3 USING (a) ORDER BY 1,2,3,4 LIMIT 1;
|
|
DEBUG: push down of limit count: 1
|
|
a | b | b | b
|
|
---------------------------------------------------------------------
|
|
1 | 0 | 0 | 1
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
JOIN LATERAL (
|
|
SELECT * FROM distributed_table t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
JOIN LATERAL (
|
|
SELECT *, random() FROM distributed_table t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
SELECT COUNT(*) FROM distributed_table t1
|
|
JOIN LATERAL (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
count
|
|
---------------------------------------------------------------------
|
|
1
|
|
(1 row)
|
|
|
|
SET client_min_messages TO DEBUG2;
|
|
SET citus.enable_repartition_joins TO OFF;
|
|
-- outer joins with different table types
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 LEFT JOIN reference_table USING(a);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
11
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM reference_table LEFT JOIN nullkey_c1_t1 USING(a);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
9
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 LEFT JOIN citus_local_table USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "citus_local_table" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.citus_local_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (query_single_shard_table.nullkey_c1_t1 LEFT JOIN (SELECT citus_local_table_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) citus_local_table_1) citus_local_table USING (a))
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
11
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM citus_local_table LEFT JOIN nullkey_c1_t1 USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "citus_local_table" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.citus_local_table WHERE true
|
|
DEBUG: recursively planning right side of the left join since the outer side is a recurring rel
|
|
DEBUG: recursively planning distributed relation "nullkey_c1_t1" since it is part of a distributed join node that is outer joined with a recurring rel
|
|
DEBUG: Wrapping relation "nullkey_c1_t1" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT a FROM query_single_shard_table.nullkey_c1_t1 WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM ((SELECT citus_local_table_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) citus_local_table_1) citus_local_table LEFT JOIN (SELECT nullkey_c1_t1_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) nullkey_c1_t1_1) nullkey_c1_t1 USING (a))
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
14
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 LEFT JOIN postgres_local_table USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "postgres_local_table" to a subquery
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.postgres_local_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (query_single_shard_table.nullkey_c1_t1 LEFT JOIN (SELECT postgres_local_table_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) postgres_local_table_1) postgres_local_table USING (a))
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
11
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM postgres_local_table LEFT JOIN nullkey_c1_t1 USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "postgres_local_table" to a subquery
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.postgres_local_table WHERE true
|
|
DEBUG: recursively planning right side of the left join since the outer side is a recurring rel
|
|
DEBUG: recursively planning distributed relation "nullkey_c1_t1" since it is part of a distributed join node that is outer joined with a recurring rel
|
|
DEBUG: Wrapping relation "nullkey_c1_t1" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT a FROM query_single_shard_table.nullkey_c1_t1 WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM ((SELECT postgres_local_table_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) postgres_local_table_1) postgres_local_table LEFT JOIN (SELECT nullkey_c1_t1_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) nullkey_c1_t1_1) nullkey_c1_t1 USING (a))
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
6
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 FULL JOIN citus_local_table USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "citus_local_table" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.citus_local_table WHERE true
|
|
DEBUG: recursively planning left side of the full join since the other side is a recurring rel
|
|
DEBUG: recursively planning distributed relation "nullkey_c1_t1" since it is part of a distributed join node that is outer joined with a recurring rel
|
|
DEBUG: Wrapping relation "nullkey_c1_t1" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT a FROM query_single_shard_table.nullkey_c1_t1 WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM ((SELECT nullkey_c1_t1_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) nullkey_c1_t1_1) nullkey_c1_t1 FULL JOIN (SELECT citus_local_table_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) citus_local_table_1) citus_local_table USING (a))
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
14
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 FULL JOIN postgres_local_table USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "postgres_local_table" to a subquery
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.postgres_local_table WHERE true
|
|
DEBUG: recursively planning left side of the full join since the other side is a recurring rel
|
|
DEBUG: recursively planning distributed relation "nullkey_c1_t1" since it is part of a distributed join node that is outer joined with a recurring rel
|
|
DEBUG: Wrapping relation "nullkey_c1_t1" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT a FROM query_single_shard_table.nullkey_c1_t1 WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM ((SELECT nullkey_c1_t1_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) nullkey_c1_t1_1) nullkey_c1_t1 FULL JOIN (SELECT postgres_local_table_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) postgres_local_table_1) postgres_local_table USING (a))
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
13
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 FULL JOIN reference_table USING(a);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
12
|
|
(1 row)
|
|
|
|
SET citus.enable_repartition_joins TO ON;
|
|
SET client_min_messages TO DEBUG1;
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 JOIN append_table USING(a);
|
|
count
|
|
---------------------------------------------------------------------
|
|
2
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 JOIN range_table USING(a);
|
|
count
|
|
---------------------------------------------------------------------
|
|
9
|
|
(1 row)
|
|
|
|
SET client_min_messages TO DEBUG2;
|
|
SET citus.enable_repartition_joins TO OFF;
|
|
SET citus.enable_non_colocated_router_query_pushdown TO ON;
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 JOIN range_table USING(a) WHERE range_table.a = 20;
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
SET citus.enable_non_colocated_router_query_pushdown TO OFF;
|
|
SET citus.enable_repartition_joins TO ON;
|
|
SET client_min_messages TO DEBUG1;
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 JOIN range_table USING(a) WHERE range_table.a = 20;
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
SET client_min_messages TO DEBUG2;
|
|
SET citus.enable_repartition_joins TO OFF;
|
|
RESET citus.enable_non_colocated_router_query_pushdown;
|
|
-- lateral / semi / anti joins with different table types
|
|
-- with a reference table
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
LEFT JOIN LATERAL (
|
|
SELECT * FROM reference_table t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
11
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE EXISTS (
|
|
SELECT * FROM reference_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
7
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE NOT EXISTS (
|
|
SELECT * FROM reference_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
4
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE t1.b IN (
|
|
SELECT b+1 FROM reference_table t2 WHERE t2.b = t1.a
|
|
);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
2
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE t1.b NOT IN (
|
|
SELECT a FROM reference_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
9
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
JOIN LATERAL (
|
|
SELECT * FROM reference_table t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM reference_table t1
|
|
LEFT JOIN LATERAL (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
6
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM reference_table t1
|
|
WHERE EXISTS (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
6
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM reference_table t1
|
|
WHERE t1.b IN (
|
|
SELECT b+1 FROM nullkey_c1_t1 t2 WHERE t2.b = t1.a
|
|
);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM reference_table t1
|
|
WHERE t1.b NOT IN (
|
|
SELECT a FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
4
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM reference_table t1
|
|
JOIN LATERAL (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
2
|
|
(1 row)
|
|
|
|
-- with a distributed table
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
LEFT JOIN LATERAL (
|
|
SELECT * FROM distributed_table t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE EXISTS (
|
|
SELECT * FROM distributed_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE NOT EXISTS (
|
|
SELECT * FROM distributed_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE t1.b IN (
|
|
SELECT b+1 FROM distributed_table t2 WHERE t2.b = t1.a
|
|
);
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE t1.b NOT IN (
|
|
SELECT a FROM distributed_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
SELECT COUNT(*) FROM distributed_table t1
|
|
LEFT JOIN LATERAL (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
SELECT COUNT(*) FROM distributed_table t1
|
|
WHERE EXISTS (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
SELECT COUNT(*) FROM distributed_table t1
|
|
WHERE t1.b IN (
|
|
SELECT b+1 FROM nullkey_c1_t1 t2 WHERE t2.b = t1.a
|
|
);
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
SELECT COUNT(*) FROM distributed_table t1
|
|
WHERE t1.b NOT IN (
|
|
SELECT a FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
-- with postgres / citus local tables
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
LEFT JOIN LATERAL (
|
|
SELECT * FROM citus_local_table t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE EXISTS (
|
|
SELECT * FROM citus_local_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE NOT EXISTS (
|
|
SELECT * FROM citus_local_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE t1.b + random() IN (
|
|
SELECT b+1 FROM citus_local_table t2 WHERE t2.b = t1.a
|
|
);
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE t1.b NOT IN (
|
|
SELECT a FROM citus_local_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
JOIN LATERAL (
|
|
SELECT * FROM citus_local_table t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
-- The following and a few other tests in this file unnecessarily go through
|
|
-- recursive planning. This is because we recursive plan distributed tables
|
|
-- when they are referred in the inner side of an outer join, if the outer
|
|
-- side is a recurring rel. In future, we can optimize that such that we
|
|
-- can skip recursively planning the single-shard table because such a join
|
|
-- wouldn't result in returning recurring tuples.
|
|
--
|
|
-- And specifically for the tests that contains a sublink (as below), things
|
|
-- get even more interesting. We try to recursively plan the single-shard
|
|
-- table but we cannot do so due to the sublink. However, the final query
|
|
-- can go through router planner and hence is supported.
|
|
SELECT COUNT(*) FROM citus_local_table t1
|
|
LEFT JOIN LATERAL (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "citus_local_table" "t1" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.citus_local_table t1 WHERE true
|
|
DEBUG: recursively planning right side of the left join since the outer side is a recurring rel
|
|
DEBUG: recursively planning the distributed subquery since it is part of a distributed join node that is outer joined with a recurring rel
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM ((SELECT t1_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) t1_1) t1 LEFT JOIN LATERAL (SELECT t2.a, t2.b FROM query_single_shard_table.nullkey_c1_t1 t2 WHERE (t2.b OPERATOR(pg_catalog.>) t1.a)) q USING (a))
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
11
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM postgres_local_table t1
|
|
LEFT JOIN LATERAL (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "postgres_local_table" "t1" to a subquery
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.postgres_local_table t1 WHERE true
|
|
DEBUG: recursively planning right side of the left join since the outer side is a recurring rel
|
|
DEBUG: recursively planning the distributed subquery since it is part of a distributed join node that is outer joined with a recurring rel
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM ((SELECT t1_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) t1_1) t1 LEFT JOIN LATERAL (SELECT t2.a, t2.b FROM query_single_shard_table.nullkey_c1_t1 t2 WHERE (t2.b OPERATOR(pg_catalog.>) t1.a)) q USING (a))
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
6
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM citus_local_table t1
|
|
WHERE EXISTS (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
SELECT COUNT(*) FROM citus_local_table t1
|
|
WHERE t1.b + random() IN (
|
|
SELECT b+1 FROM nullkey_c1_t1 t2 WHERE t2.b = t1.a
|
|
);
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
SELECT COUNT(*) FROM citus_local_table t1
|
|
WHERE t1.b NOT IN (
|
|
SELECT a FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
SELECT COUNT(*) FROM citus_local_table t1
|
|
JOIN LATERAL (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "citus_local_table" "t1" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.citus_local_table t1 WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM ((SELECT t1_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) t1_1) t1 JOIN LATERAL (SELECT t2.a, t2.b FROM query_single_shard_table.nullkey_c1_t1 t2 WHERE (t2.b OPERATOR(pg_catalog.>) t1.a)) q USING (a))
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
2
|
|
(1 row)
|
|
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
LEFT JOIN LATERAL (
|
|
SELECT * FROM postgres_local_table t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
HINT: Use CTE's or subqueries to select from local tables and use them in joins
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE EXISTS (
|
|
SELECT * FROM postgres_local_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
HINT: Use CTE's or subqueries to select from local tables and use them in joins
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE NOT EXISTS (
|
|
SELECT * FROM postgres_local_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
HINT: Use CTE's or subqueries to select from local tables and use them in joins
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE t1.b + random() IN (
|
|
SELECT b+1 FROM postgres_local_table t2 WHERE t2.b = t1.a
|
|
);
|
|
DEBUG: found no worker with all shard placements
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
HINT: Use CTE's or subqueries to select from local tables and use them in joins
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
WHERE t1.b NOT IN (
|
|
SELECT a FROM postgres_local_table t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: found no worker with all shard placements
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
HINT: Use CTE's or subqueries to select from local tables and use them in joins
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1
|
|
JOIN LATERAL (
|
|
SELECT * FROM postgres_local_table t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
HINT: Use CTE's or subqueries to select from local tables and use them in joins
|
|
SELECT COUNT(*) FROM postgres_local_table t1
|
|
WHERE EXISTS (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
HINT: Use CTE's or subqueries to select from local tables and use them in joins
|
|
SELECT COUNT(*) FROM postgres_local_table t1
|
|
WHERE t1.b + random() IN (
|
|
SELECT b+1 FROM nullkey_c1_t1 t2 WHERE t2.b = t1.a
|
|
);
|
|
DEBUG: found no worker with all shard placements
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
HINT: Use CTE's or subqueries to select from local tables and use them in joins
|
|
SELECT COUNT(*) FROM postgres_local_table t1
|
|
WHERE t1.b NOT IN (
|
|
SELECT a FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
);
|
|
DEBUG: found no worker with all shard placements
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
ERROR: direct joins between distributed and local tables are not supported
|
|
HINT: Use CTE's or subqueries to select from local tables and use them in joins
|
|
SELECT COUNT(*) FROM postgres_local_table t1
|
|
JOIN LATERAL (
|
|
SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
|
|
) q USING(a);
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: Wrapping relation "postgres_local_table" "t1" to a subquery
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.postgres_local_table t1 WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM ((SELECT t1_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) t1_1) t1 JOIN LATERAL (SELECT t2.a, t2.b FROM query_single_shard_table.nullkey_c1_t1 t2 WHERE (t2.b OPERATOR(pg_catalog.>) t1.a)) q USING (a))
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
-- insert .. select
|
|
-- between two colocated single-shard tables
|
|
-- The target list of "distributed statement"s that we send to workers
|
|
-- differ(*) in Postgres versions < 15. For this reason, we temporarily
|
|
-- disable debug messages here and run the EXPLAIN'ed version of the
|
|
-- command.
|
|
--
|
|
-- (*): < SELECT a, b > vs < SELECT table_name.a, table_name.b >
|
|
SET client_min_messages TO WARNING;
|
|
EXPLAIN (ANALYZE TRUE, TIMING FALSE, COSTS FALSE, SUMMARY FALSE, VERBOSE FALSE)
|
|
INSERT INTO nullkey_c1_t1 SELECT * FROM nullkey_c1_t2;
|
|
QUERY PLAN
|
|
---------------------------------------------------------------------
|
|
Custom Scan (Citus Adaptive) (actual rows=0 loops=1)
|
|
Task Count: 1
|
|
Tasks Shown: All
|
|
-> Task
|
|
Node: host=localhost port=xxxxx dbname=regression
|
|
-> Insert on nullkey_c1_t1_1620000 citus_table_alias (actual rows=0 loops=1)
|
|
-> Seq Scan on nullkey_c1_t2_1620001 nullkey_c1_t2 (actual rows=10 loops=1)
|
|
(7 rows)
|
|
|
|
SET client_min_messages TO DEBUG2;
|
|
-- between two non-colocated single-shard tables
|
|
INSERT INTO nullkey_c1_t1 SELECT * FROM nullkey_c2_t1;
|
|
DEBUG: Creating router plan
|
|
DEBUG: INSERT target relation and all source relations of the SELECT must be colocated in distributed INSERT ... SELECT
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
-- between a single-shard table and a table of different type
|
|
SET client_min_messages TO WARNING;
|
|
EXPLAIN (ANALYZE TRUE, TIMING FALSE, COSTS FALSE, SUMMARY FALSE, VERBOSE FALSE)
|
|
INSERT INTO nullkey_c1_t1 SELECT * FROM reference_table;
|
|
QUERY PLAN
|
|
---------------------------------------------------------------------
|
|
Custom Scan (Citus Adaptive) (actual rows=0 loops=1)
|
|
Task Count: 1
|
|
Tasks Shown: All
|
|
-> Task
|
|
Node: host=localhost port=xxxxx dbname=regression
|
|
-> Insert on nullkey_c1_t1_1620000 citus_table_alias (actual rows=0 loops=1)
|
|
-> Seq Scan on reference_table_1620005 reference_table (actual rows=6 loops=1)
|
|
(7 rows)
|
|
|
|
SET client_min_messages TO DEBUG2;
|
|
INSERT INTO nullkey_c1_t1 SELECT * FROM distributed_table;
|
|
DEBUG: INSERT target relation and all source relations of the SELECT must be colocated in distributed INSERT ... SELECT
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
INSERT INTO nullkey_c1_t1 SELECT * FROM citus_local_table;
|
|
DEBUG: Creating router plan
|
|
DEBUG: distributed INSERT ... SELECT cannot select from a local relation when inserting into a distributed table
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
INSERT INTO nullkey_c1_t1 SELECT * FROM postgres_local_table;
|
|
DEBUG: Creating router plan
|
|
DEBUG: distributed INSERT ... SELECT can only select from distributed tables
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
INSERT INTO reference_table SELECT * FROM nullkey_c1_t1;
|
|
DEBUG: Creating router plan
|
|
DEBUG: only reference tables may be queried when targeting a reference table with distributed INSERT ... SELECT
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
INSERT INTO distributed_table SELECT * FROM nullkey_c1_t1;
|
|
DEBUG: Creating router plan
|
|
DEBUG: cannot perform distributed INSERT INTO ... SELECT because the partition columns in the source table and subquery do not match
|
|
DETAIL: The target table's partition column should correspond to a partition column in the subquery.
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
INSERT INTO citus_local_table SELECT * FROM nullkey_c1_t1;
|
|
DEBUG: Creating router plan
|
|
DEBUG: distributed INSERT ... SELECT cannot insert into a local table that is added to metadata
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
INSERT INTO postgres_local_table SELECT * FROM nullkey_c1_t1;
|
|
DEBUG: Creating router plan
|
|
-- test subquery
|
|
SELECT count(*) FROM
|
|
(
|
|
SELECT * FROM (SELECT * FROM nullkey_c1_t2) as subquery_inner
|
|
) AS subquery_top;
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
10
|
|
(1 row)
|
|
|
|
-- test cte inlining
|
|
WITH cte_nullkey_c1_t1 AS (SELECT * FROM nullkey_c1_t1),
|
|
cte_postgres_local_table AS (SELECT * FROM postgres_local_table),
|
|
cte_distributed_table AS (SELECT * FROM distributed_table)
|
|
SELECT COUNT(*) FROM cte_distributed_table, cte_nullkey_c1_t1, cte_postgres_local_table
|
|
WHERE cte_nullkey_c1_t1.a > 3 AND cte_distributed_table.a < 5;
|
|
DEBUG: CTE cte_nullkey_c1_t1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_postgres_local_table is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_distributed_table is going to be inlined via distributed planning
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.postgres_local_table
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT a, b FROM query_single_shard_table.nullkey_c1_t1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT distributed_table.a, distributed_table.b FROM query_single_shard_table.distributed_table) cte_distributed_table, (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) cte_nullkey_c1_t1, (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) cte_postgres_local_table WHERE ((cte_nullkey_c1_t1.a OPERATOR(pg_catalog.>) 3) AND (cte_distributed_table.a OPERATOR(pg_catalog.<) 5))
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
count
|
|
---------------------------------------------------------------------
|
|
78144
|
|
(1 row)
|
|
|
|
-- test recursive ctes
|
|
WITH level_0 AS (
|
|
WITH level_1 AS (
|
|
WITH RECURSIVE level_2_recursive(x) AS (
|
|
VALUES (1)
|
|
UNION ALL
|
|
SELECT a + 1 FROM nullkey_c1_t1 JOIN level_2_recursive ON (a = x) WHERE a < 2
|
|
)
|
|
SELECT * FROM level_2_recursive RIGHT JOIN reference_table ON (level_2_recursive.x = reference_table.a)
|
|
)
|
|
SELECT * FROM level_1
|
|
)
|
|
SELECT COUNT(*) FROM level_0;
|
|
DEBUG: CTE level_0 is going to be inlined via distributed planning
|
|
DEBUG: CTE level_1 is going to be inlined via distributed planning
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
106
|
|
(1 row)
|
|
|
|
WITH level_0 AS (
|
|
WITH level_1 AS (
|
|
WITH RECURSIVE level_2_recursive(x) AS (
|
|
VALUES (1)
|
|
UNION ALL
|
|
SELECT a + 1 FROM nullkey_c1_t1 JOIN level_2_recursive ON (a = x) WHERE a < 100
|
|
)
|
|
SELECT * FROM level_2_recursive JOIN distributed_table ON (level_2_recursive.x = distributed_table.a)
|
|
)
|
|
SELECT * FROM level_1
|
|
)
|
|
SELECT COUNT(*) FROM level_0;
|
|
DEBUG: CTE level_0 is going to be inlined via distributed planning
|
|
DEBUG: CTE level_1 is going to be inlined via distributed planning
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: generating subplan XXX_1 for CTE level_0: WITH level_1 AS (WITH RECURSIVE level_2_recursive(x) AS (VALUES (1) UNION ALL SELECT (nullkey_c1_t1.a OPERATOR(pg_catalog.+) 1) FROM (query_single_shard_table.nullkey_c1_t1 JOIN level_2_recursive level_2_recursive_1 ON ((nullkey_c1_t1.a OPERATOR(pg_catalog.=) level_2_recursive_1.x))) WHERE (nullkey_c1_t1.a OPERATOR(pg_catalog.<) 100)) SELECT level_2_recursive.x, distributed_table.a, distributed_table.b FROM (level_2_recursive JOIN query_single_shard_table.distributed_table ON ((level_2_recursive.x OPERATOR(pg_catalog.=) distributed_table.a)))) SELECT x, a, b FROM level_1
|
|
DEBUG: CTE level_1 is going to be inlined via distributed planning
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: generating subplan XXX_1 for CTE level_1: WITH RECURSIVE level_2_recursive(x) AS (VALUES (1) UNION ALL SELECT (nullkey_c1_t1.a OPERATOR(pg_catalog.+) 1) FROM (query_single_shard_table.nullkey_c1_t1 JOIN level_2_recursive level_2_recursive_1 ON ((nullkey_c1_t1.a OPERATOR(pg_catalog.=) level_2_recursive_1.x))) WHERE (nullkey_c1_t1.a OPERATOR(pg_catalog.<) 100)) SELECT level_2_recursive.x, distributed_table.a, distributed_table.b FROM (level_2_recursive JOIN query_single_shard_table.distributed_table ON ((level_2_recursive.x OPERATOR(pg_catalog.=) distributed_table.a)))
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
ERROR: recursive CTEs are only supported when they contain a filter on the distribution column
|
|
-- grouping set
|
|
SELECT
|
|
id, substring(title, 2, 1) AS subtitle, count(*)
|
|
FROM articles_hash
|
|
WHERE author_id = 1 or author_id = 2
|
|
GROUP BY GROUPING SETS ((id),(subtitle))
|
|
ORDER BY id, subtitle;
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
id | subtitle | count
|
|
---------------------------------------------------------------------
|
|
42 | | 1
|
|
| u | 1
|
|
(2 rows)
|
|
|
|
-- subquery in SELECT clause
|
|
SELECT a.title AS name, (SELECT a2.id FROM articles_hash a2 WHERE a.id = a2.id LIMIT 1)
|
|
AS special_price FROM articles_hash a
|
|
ORDER BY 1,2;
|
|
DEBUG: Creating router plan
|
|
name | special_price
|
|
---------------------------------------------------------------------
|
|
adversa | 15
|
|
aerophyte | 28
|
|
affixal | 43
|
|
altdorfer | 4
|
|
amateur | 29
|
|
anjanette | 50
|
|
anyone | 49
|
|
aruru | 5
|
|
aseyev | 13
|
|
assembly | 18
|
|
aubergiste | 19
|
|
ausable | 42
|
|
(12 rows)
|
|
|
|
-- test having clause
|
|
SELECT COUNT(*), b FROM nullkey_c1_t1 GROUP BY 2
|
|
HAVING (SELECT COUNT(*) FROM nullkey_c1_t2) > 0
|
|
ORDER BY 1,2;
|
|
DEBUG: Creating router plan
|
|
count | b
|
|
---------------------------------------------------------------------
|
|
2 | 9
|
|
2 | 10
|
|
3 | 0
|
|
4 | 1
|
|
4 | 8
|
|
6 | 6
|
|
6 | 7
|
|
8 | 3
|
|
8 | 4
|
|
8 | 5
|
|
9 | 2
|
|
(11 rows)
|
|
|
|
SELECT COUNT(*), b FROM nullkey_c1_t1 GROUP BY 2
|
|
HAVING (SELECT COUNT(*) FROM nullkey_c2_t1) > 0
|
|
ORDER BY 1,2;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT count(*) AS count FROM query_single_shard_table.nullkey_c2_t1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count, b FROM query_single_shard_table.nullkey_c1_t1 GROUP BY b HAVING ((SELECT intermediate_result.count FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(count bigint)) OPERATOR(pg_catalog.>) 0) ORDER BY (count(*)), b
|
|
DEBUG: Creating router plan
|
|
count | b
|
|
---------------------------------------------------------------------
|
|
2 | 9
|
|
2 | 10
|
|
3 | 0
|
|
4 | 1
|
|
4 | 8
|
|
6 | 6
|
|
6 | 7
|
|
8 | 3
|
|
8 | 4
|
|
8 | 5
|
|
9 | 2
|
|
(11 rows)
|
|
|
|
SELECT COUNT(*), b FROM nullkey_c1_t1 GROUP BY 2
|
|
HAVING (SELECT COUNT(*) FROM distributed_table) > 0
|
|
ORDER BY 1,2;
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT count(*) AS count FROM query_single_shard_table.distributed_table
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count, b FROM query_single_shard_table.nullkey_c1_t1 GROUP BY b HAVING ((SELECT intermediate_result.count FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(count bigint)) OPERATOR(pg_catalog.>) 0) ORDER BY (count(*)), b
|
|
DEBUG: Creating router plan
|
|
count | b
|
|
---------------------------------------------------------------------
|
|
2 | 9
|
|
2 | 10
|
|
3 | 0
|
|
4 | 1
|
|
4 | 8
|
|
6 | 6
|
|
6 | 7
|
|
8 | 3
|
|
8 | 4
|
|
8 | 5
|
|
9 | 2
|
|
(11 rows)
|
|
|
|
SELECT COUNT(*), b FROM nullkey_c1_t1 t4 GROUP BY 2
|
|
HAVING (
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1 JOIN (SELECT * FROM nullkey_c1_t2) t2 USING (a) JOIN (SELECT * FROM nullkey_c1_t2) t3 USING (a)
|
|
WHERE t2.b > t4.b
|
|
) > 5
|
|
ORDER BY 1,2;
|
|
DEBUG: Creating router plan
|
|
count | b
|
|
---------------------------------------------------------------------
|
|
3 | 0
|
|
4 | 1
|
|
6 | 6
|
|
8 | 3
|
|
8 | 4
|
|
8 | 5
|
|
9 | 2
|
|
(7 rows)
|
|
|
|
SELECT COUNT(*), b FROM distributed_table t4 GROUP BY 2
|
|
HAVING (
|
|
SELECT COUNT(*) FROM nullkey_c1_t1 t1 JOIN (SELECT * FROM distributed_table) t2 USING (a) JOIN (SELECT * FROM nullkey_c1_t2) t3 USING (a)
|
|
WHERE t2.b > t4.b
|
|
) > 5
|
|
ORDER BY 1,2;
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a, b FROM query_single_shard_table.distributed_table
|
|
ERROR: Subqueries in HAVING cannot refer to outer query
|
|
-- test prepared statements
|
|
-- prepare queries can be router plannable
|
|
PREPARE author_1_articles as
|
|
SELECT *
|
|
FROM articles_hash
|
|
WHERE author_id = 1;
|
|
EXECUTE author_1_articles;
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_1_articles;
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_1_articles;
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_1_articles;
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_1_articles;
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_1_articles;
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
-- parametric prepare queries can be router plannable
|
|
PREPARE author_articles(int) as
|
|
SELECT *
|
|
FROM articles_hash
|
|
WHERE author_id = $1;
|
|
EXECUTE author_articles(1);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(1);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(1);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(1);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(1);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(1);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(NULL);
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(NULL);
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(NULL);
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(NULL);
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(NULL);
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(NULL);
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
EXECUTE author_articles(NULL);
|
|
id | author_id | title | word_count
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
PREPARE author_articles_update(int) AS
|
|
UPDATE articles_hash SET title = 'test' WHERE author_id = $1;
|
|
EXECUTE author_articles_update(NULL);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE author_articles_update(NULL);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE author_articles_update(NULL);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE author_articles_update(NULL);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE author_articles_update(NULL);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE author_articles_update(NULL);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE author_articles_update(NULL);
|
|
-- More tests with insert .. select.
|
|
--
|
|
-- The target list of "distributed statement"s that we send to workers
|
|
-- might differ(*) in Postgres versions < 15 and they are reported when
|
|
-- "log level >= DEBUG2". For this reason, we set log level to DEBUG1 to
|
|
-- avoid reporting them.
|
|
--
|
|
-- DEBUG1 still allows reporting the reason why given INSERT .. SELECT
|
|
-- query is not distributed / requires pull-to-coordinator.
|
|
SET client_min_messages TO DEBUG1;
|
|
INSERT INTO bigserial_test (x, y) SELECT x, y FROM bigserial_test;
|
|
DEBUG: volatile functions are not allowed in distributed INSERT ... SELECT queries
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
INSERT INTO bigserial_test (x, y) SELECT a, a FROM reference_table;
|
|
DEBUG: volatile functions are not allowed in distributed INSERT ... SELECT queries
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
INSERT INTO agg_events
|
|
(user_id)
|
|
SELECT f2.id FROM
|
|
(SELECT
|
|
id
|
|
FROM (SELECT users_ref_table.user_id AS id
|
|
FROM raw_events_first,
|
|
users_ref_table
|
|
WHERE raw_events_first.user_id = users_ref_table.user_id ) AS foo) as f
|
|
INNER JOIN
|
|
(SELECT v4,
|
|
v1,
|
|
id
|
|
FROM (SELECT SUM(raw_events_second.value_4) AS v4,
|
|
SUM(raw_events_first.value_1) AS v1,
|
|
raw_events_second.user_id AS id
|
|
FROM raw_events_first,
|
|
raw_events_second
|
|
WHERE raw_events_first.user_id = raw_events_second.user_id
|
|
GROUP BY raw_events_second.user_id
|
|
HAVING SUM(raw_events_second.value_4) > 1000) AS foo2 ) as f2
|
|
ON (f.id = f2.id)
|
|
WHERE f.id IN (SELECT user_id
|
|
FROM raw_events_second);
|
|
-- upsert with returning
|
|
INSERT INTO agg_events AS ae
|
|
(
|
|
user_id,
|
|
value_1_agg,
|
|
agg_time
|
|
)
|
|
SELECT user_id,
|
|
value_1,
|
|
time
|
|
FROM raw_events_first
|
|
ON conflict (user_id, value_1_agg)
|
|
DO UPDATE
|
|
SET agg_time = EXCLUDED.agg_time
|
|
WHERE ae.agg_time < EXCLUDED.agg_time
|
|
RETURNING user_id, value_1_agg;
|
|
user_id | value_1_agg
|
|
---------------------------------------------------------------------
|
|
1 | 10
|
|
2 | 20
|
|
3 | 30
|
|
4 | 40
|
|
5 | 50
|
|
6 | 60
|
|
(6 rows)
|
|
|
|
-- using a left join
|
|
INSERT INTO agg_events (user_id)
|
|
SELECT
|
|
raw_events_first.user_id
|
|
FROM
|
|
raw_events_first LEFT JOIN raw_events_second ON raw_events_first.user_id = raw_events_second.user_id
|
|
WHERE raw_events_second.user_id = 10 OR raw_events_second.user_id = 11;
|
|
INSERT INTO agg_events (user_id)
|
|
SELECT
|
|
users_ref_table.user_id
|
|
FROM
|
|
users_ref_table LEFT JOIN raw_events_second ON users_ref_table.user_id = raw_events_second.user_id
|
|
WHERE raw_events_second.user_id = 10 OR raw_events_second.user_id = 11;
|
|
INSERT INTO agg_events (user_id)
|
|
SELECT COALESCE(raw_events_first.user_id, users_ref_table.user_id)
|
|
FROM raw_events_first
|
|
RIGHT JOIN (users_ref_table LEFT JOIN raw_events_second ON users_ref_table.user_id = raw_events_second.user_id)
|
|
ON raw_events_first.user_id = users_ref_table.user_id;
|
|
-- using a full join
|
|
INSERT INTO agg_events (user_id, value_1_agg)
|
|
SELECT t1.user_id AS col1,
|
|
t2.user_id AS col2
|
|
FROM raw_events_first t1
|
|
FULL JOIN raw_events_second t2
|
|
ON t1.user_id = t2.user_id;
|
|
-- using semi join
|
|
INSERT INTO raw_events_second
|
|
(user_id)
|
|
SELECT user_id
|
|
FROM raw_events_first
|
|
WHERE user_id IN (SELECT raw_events_second.user_id
|
|
FROM raw_events_second, raw_events_first
|
|
WHERE raw_events_second.user_id = raw_events_first.user_id AND raw_events_first.user_id = 200);
|
|
-- using lateral join
|
|
INSERT INTO raw_events_second
|
|
(user_id)
|
|
SELECT user_id
|
|
FROM raw_events_first
|
|
WHERE NOT EXISTS (SELECT 1
|
|
FROM raw_events_second
|
|
WHERE raw_events_second.user_id =raw_events_first.user_id);
|
|
INSERT INTO raw_events_second
|
|
(user_id)
|
|
SELECT user_id
|
|
FROM users_ref_table
|
|
WHERE NOT EXISTS (SELECT 1
|
|
FROM raw_events_second
|
|
WHERE raw_events_second.user_id = users_ref_table.user_id);
|
|
-- using inner join
|
|
INSERT INTO agg_events (user_id)
|
|
SELECT raw_events_first.user_id
|
|
FROM raw_events_first INNER JOIN raw_events_second ON raw_events_first.user_id = raw_events_second.value_1
|
|
WHERE raw_events_first.value_1 IN (10, 11,12) OR raw_events_second.user_id IN (1,2,3,4);
|
|
INSERT INTO agg_events (user_id)
|
|
SELECT raw_events_first.user_id
|
|
FROM raw_events_first INNER JOIN users_ref_table ON raw_events_first.user_id = users_ref_table.user_id
|
|
WHERE raw_events_first.value_1 IN (10, 11,12) OR users_ref_table.user_id IN (1,2,3,4);
|
|
-- limit / offset clause
|
|
INSERT INTO agg_events (user_id) SELECT raw_events_first.user_id FROM raw_events_first LIMIT 1;
|
|
INSERT INTO agg_events (user_id) SELECT raw_events_first.user_id FROM raw_events_first OFFSET 1;
|
|
INSERT INTO agg_events (user_id) SELECT users_ref_table.user_id FROM users_ref_table LIMIT 1;
|
|
-- using a materialized cte
|
|
WITH cte AS MATERIALIZED
|
|
(SELECT max(value_1)+1 as v1_agg, user_id FROM raw_events_first GROUP BY user_id)
|
|
INSERT INTO agg_events (value_1_agg, user_id)
|
|
SELECT v1_agg, user_id FROM cte;
|
|
DEBUG: distributed INSERT ... SELECT can only select from distributed tables
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
INSERT INTO raw_events_second
|
|
WITH cte AS MATERIALIZED (SELECT * FROM raw_events_first)
|
|
SELECT user_id * 1000, time, value_1, value_2, value_3, value_4 FROM cte;
|
|
INSERT INTO raw_events_second (user_id)
|
|
WITH cte AS MATERIALIZED (SELECT * FROM users_ref_table)
|
|
SELECT user_id FROM cte;
|
|
-- using a regular cte
|
|
WITH cte AS (SELECT * FROM raw_events_first)
|
|
INSERT INTO raw_events_second
|
|
SELECT user_id * 7000, time, value_1, value_2, value_3, value_4 FROM cte;
|
|
DEBUG: distributed INSERT ... SELECT can only select from distributed tables
|
|
DEBUG: CTE cte is going to be inlined via distributed planning
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
INSERT INTO raw_events_second
|
|
WITH cte AS (SELECT * FROM raw_events_first)
|
|
SELECT * FROM cte;
|
|
DEBUG: CTE cte is going to be inlined via distributed planning
|
|
INSERT INTO agg_events
|
|
WITH sub_cte AS (SELECT 1)
|
|
SELECT
|
|
raw_events_first.user_id, (SELECT * FROM sub_cte)
|
|
FROM
|
|
raw_events_first;
|
|
DEBUG: CTE sub_cte is going to be inlined via distributed planning
|
|
-- we still support complex joins via INSERT's cte list ..
|
|
WITH cte AS (
|
|
SELECT DISTINCT(reference_table.a) AS a, 1 AS b
|
|
FROM distributed_table RIGHT JOIN reference_table USING (a)
|
|
)
|
|
INSERT INTO raw_events_second (user_id, value_1)
|
|
SELECT (a+5)*-1, b FROM cte;
|
|
DEBUG: distributed INSERT ... SELECT can only select from distributed tables
|
|
DEBUG: CTE cte is going to be inlined via distributed planning
|
|
DEBUG: recursively planning left side of the right join since the outer side is a recurring rel
|
|
DEBUG: recursively planning distributed relation "distributed_table" since it is part of a distributed join node that is outer joined with a recurring rel
|
|
DEBUG: Wrapping relation "distributed_table" to a subquery
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.distributed_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT "?column?" AS user_id, b AS value_1 FROM (SELECT ((cte.a OPERATOR(pg_catalog.+) 5) OPERATOR(pg_catalog.*) '-1'::integer), cte.b FROM (SELECT DISTINCT reference_table.a, 1 AS b FROM ((SELECT distributed_table_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) distributed_table_1) distributed_table RIGHT JOIN query_single_shard_table.reference_table USING (a))) cte) citus_insert_select_subquery("?column?", b)
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
-- .. and via SELECT's cte list too
|
|
INSERT INTO raw_events_second (user_id, value_1)
|
|
WITH cte AS (
|
|
SELECT DISTINCT(reference_table.a) AS a, 1 AS b
|
|
FROM distributed_table RIGHT JOIN reference_table USING (a)
|
|
)
|
|
SELECT (a+5)*2, b FROM cte;
|
|
DEBUG: CTE cte is going to be inlined via distributed planning
|
|
DEBUG: cannot perform a lateral outer join when a distributed subquery references a reference table
|
|
DEBUG: recursively planning left side of the right join since the outer side is a recurring rel
|
|
DEBUG: recursively planning distributed relation "distributed_table" since it is part of a distributed join node that is outer joined with a recurring rel
|
|
DEBUG: Wrapping relation "distributed_table" to a subquery
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.distributed_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT ((a OPERATOR(pg_catalog.+) 5) OPERATOR(pg_catalog.*) 2) AS user_id, b AS value_1 FROM (SELECT DISTINCT reference_table.a, 1 AS b FROM ((SELECT distributed_table_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) distributed_table_1) distributed_table RIGHT JOIN query_single_shard_table.reference_table USING (a))) cte
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
-- using set operations
|
|
INSERT INTO
|
|
raw_events_first(user_id)
|
|
(SELECT user_id FROM raw_events_first) INTERSECT
|
|
(SELECT user_id FROM raw_events_first);
|
|
INSERT INTO
|
|
raw_events_first(user_id)
|
|
(SELECT user_id FROM users_ref_table) INTERSECT
|
|
(SELECT user_id FROM raw_events_first);
|
|
-- group by clause inside subquery
|
|
INSERT INTO agg_events
|
|
(user_id)
|
|
SELECT f2.id FROM
|
|
(SELECT
|
|
id
|
|
FROM (SELECT raw_events_second.user_id AS id
|
|
FROM raw_events_first,
|
|
raw_events_second
|
|
WHERE raw_events_first.user_id = raw_events_second.user_id ) AS foo) as f
|
|
INNER JOIN
|
|
(SELECT v4,
|
|
v1,
|
|
id
|
|
FROM (SELECT SUM(raw_events_second.value_4) AS v4,
|
|
SUM(raw_events_first.value_1) AS v1,
|
|
raw_events_second.user_id AS id
|
|
FROM raw_events_first,
|
|
raw_events_second
|
|
WHERE raw_events_first.user_id = raw_events_second.user_id
|
|
GROUP BY raw_events_second.user_id
|
|
HAVING SUM(raw_events_second.value_4) > 1000) AS foo2 ) as f2
|
|
ON (f.id = f2.id)
|
|
WHERE f.id IN (SELECT user_id
|
|
FROM raw_events_second);
|
|
-- group by clause inside lateral subquery
|
|
INSERT INTO agg_events (user_id, value_4_agg)
|
|
SELECT
|
|
averages.user_id, avg(averages.value_4)
|
|
FROM
|
|
(SELECT
|
|
t1.user_id
|
|
FROM
|
|
raw_events_second t1 JOIN raw_events_second t2 on (t1.user_id = t2.user_id)
|
|
) reference_ids
|
|
JOIN LATERAL
|
|
(SELECT
|
|
user_id, value_4
|
|
FROM
|
|
raw_events_first) as averages ON averages.value_4 = reference_ids.user_id
|
|
GROUP BY averages.user_id;
|
|
-- using aggregates
|
|
INSERT INTO agg_events
|
|
(value_3_agg,
|
|
value_4_agg,
|
|
value_1_agg,
|
|
value_2_agg,
|
|
user_id)
|
|
SELECT SUM(value_3),
|
|
Count(value_4),
|
|
user_id,
|
|
SUM(value_1),
|
|
Avg(value_2)
|
|
FROM raw_events_first
|
|
GROUP BY user_id;
|
|
INSERT INTO agg_events (value_3_agg, value_1_agg)
|
|
SELECT AVG(user_id), SUM(user_id)
|
|
FROM users_ref_table
|
|
GROUP BY user_id;
|
|
-- using generate_series
|
|
INSERT INTO raw_events_first (user_id, value_1, value_2)
|
|
SELECT s, s, s FROM generate_series(1, 5) s;
|
|
DEBUG: distributed INSERT ... SELECT can only select from distributed tables
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
CREATE SEQUENCE insert_select_test_seq;
|
|
-- nextval() expression in select's targetlist
|
|
INSERT INTO raw_events_first (user_id, value_1, value_2)
|
|
SELECT s, nextval('insert_select_test_seq'), (random()*10)::int
|
|
FROM generate_series(100, 105) s;
|
|
DEBUG: distributed INSERT ... SELECT can only select from distributed tables
|
|
DEBUG: Collecting INSERT ... SELECT results on coordinator
|
|
-- non-immutable function
|
|
INSERT INTO modify_fast_path (key, value_1) VALUES (2,1) RETURNING value_1, random() * key;
|
|
ERROR: non-IMMUTABLE functions are not allowed in the RETURNING clause
|
|
SET client_min_messages TO DEBUG2;
|
|
-- update / delete
|
|
UPDATE nullkey_c1_t1 SET a = 1 WHERE b = 5;
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
UPDATE nullkey_c1_t1 SET a = 1 WHERE a = 5;
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
UPDATE nullkey_c1_t1 SET a = random();
|
|
DEBUG: functions used in UPDATE queries on distributed tables must not be VOLATILE
|
|
ERROR: functions used in UPDATE queries on distributed tables must not be VOLATILE
|
|
UPDATE nullkey_c1_t1 SET a = 1 WHERE a = random();
|
|
DEBUG: functions used in the WHERE/ON/WHEN clause of modification queries on distributed tables must not be VOLATILE
|
|
ERROR: functions used in the WHERE/ON/WHEN clause of modification queries on distributed tables must not be VOLATILE
|
|
DELETE FROM nullkey_c1_t1 WHERE b = 5;
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DELETE FROM nullkey_c1_t1 WHERE a = random();
|
|
DEBUG: functions used in the WHERE/ON/WHEN clause of modification queries on distributed tables must not be VOLATILE
|
|
ERROR: functions used in the WHERE/ON/WHEN clause of modification queries on distributed tables must not be VOLATILE
|
|
-- simple update queries between different table types / colocated tables
|
|
UPDATE nullkey_c1_t1 SET b = 5 FROM nullkey_c1_t2 WHERE nullkey_c1_t1.b = nullkey_c1_t2.b;
|
|
DEBUG: Creating router plan
|
|
UPDATE nullkey_c1_t1 SET b = 5 FROM nullkey_c2_t1 WHERE nullkey_c1_t1.b = nullkey_c2_t1.b;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
ERROR: router planner does not support queries that reference non-colocated distributed tables
|
|
UPDATE nullkey_c1_t1 SET b = 5 FROM reference_table WHERE nullkey_c1_t1.b = reference_table.b;
|
|
DEBUG: Creating router plan
|
|
UPDATE nullkey_c1_t1 SET b = 5 FROM distributed_table WHERE nullkey_c1_t1.b = distributed_table.b;
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
UPDATE nullkey_c1_t1 SET b = 5 FROM distributed_table WHERE nullkey_c1_t1.b = distributed_table.a;
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
UPDATE nullkey_c1_t1 SET b = 5 FROM citus_local_table WHERE nullkey_c1_t1.b = citus_local_table.b;
|
|
DEBUG: local table citus_local_table cannot be joined with these distributed tables
|
|
DEBUG: Wrapping relation "citus_local_table" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT b FROM query_single_shard_table.citus_local_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: UPDATE query_single_shard_table.nullkey_c1_t1 SET b = 5 FROM (SELECT NULL::integer AS a, citus_local_table_1.b FROM (SELECT intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(b integer)) citus_local_table_1) citus_local_table WHERE (nullkey_c1_t1.b OPERATOR(pg_catalog.=) citus_local_table.b)
|
|
DEBUG: Creating router plan
|
|
UPDATE nullkey_c1_t1 SET b = 5 FROM postgres_local_table WHERE nullkey_c1_t1.b = postgres_local_table.b;
|
|
DEBUG: relation postgres_local_table is not distributed
|
|
DEBUG: Wrapping relation "postgres_local_table" to a subquery
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT b FROM query_single_shard_table.postgres_local_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: UPDATE query_single_shard_table.nullkey_c1_t1 SET b = 5 FROM (SELECT NULL::integer AS a, postgres_local_table_1.b FROM (SELECT intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(b integer)) postgres_local_table_1) postgres_local_table WHERE (nullkey_c1_t1.b OPERATOR(pg_catalog.=) postgres_local_table.b)
|
|
DEBUG: Creating router plan
|
|
UPDATE reference_table SET b = 5 FROM nullkey_c1_t1 WHERE nullkey_c1_t1.b = reference_table.b;
|
|
ERROR: cannot perform select on a distributed table and modify a reference table
|
|
UPDATE distributed_table SET b = 5 FROM nullkey_c1_t1 WHERE nullkey_c1_t1.b = distributed_table.b;
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
UPDATE distributed_table SET b = 5 FROM nullkey_c1_t1 WHERE nullkey_c1_t1.b = distributed_table.a;
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
UPDATE citus_local_table SET b = 5 FROM nullkey_c1_t1 WHERE nullkey_c1_t1.b = citus_local_table.b;
|
|
DEBUG: local table citus_local_table cannot be joined with these distributed tables
|
|
DEBUG: Wrapping relation "nullkey_c1_t1" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT b FROM query_single_shard_table.nullkey_c1_t1 WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: UPDATE query_single_shard_table.citus_local_table SET b = 5 FROM (SELECT NULL::integer AS a, nullkey_c1_t1_1.b FROM (SELECT intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(b integer)) nullkey_c1_t1_1) nullkey_c1_t1 WHERE (nullkey_c1_t1.b OPERATOR(pg_catalog.=) citus_local_table.b)
|
|
DEBUG: Creating router plan
|
|
UPDATE postgres_local_table SET b = 5 FROM nullkey_c1_t1 WHERE nullkey_c1_t1.b = postgres_local_table.b;
|
|
DEBUG: relation postgres_local_table is not distributed
|
|
DEBUG: Wrapping relation "nullkey_c1_t1" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT b FROM query_single_shard_table.nullkey_c1_t1 WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: UPDATE query_single_shard_table.postgres_local_table SET b = 5 FROM (SELECT NULL::integer AS a, nullkey_c1_t1_1.b FROM (SELECT intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(b integer)) nullkey_c1_t1_1) nullkey_c1_t1 WHERE (nullkey_c1_t1.b OPERATOR(pg_catalog.=) postgres_local_table.b)
|
|
DEBUG: Creating router plan
|
|
-- simple delete queries between different table types / colocated tables
|
|
DELETE FROM nullkey_c1_t1 USING nullkey_c1_t2 WHERE nullkey_c1_t1.b = nullkey_c1_t2.b;
|
|
DEBUG: Creating router plan
|
|
DELETE FROM nullkey_c1_t1 USING nullkey_c2_t1 WHERE nullkey_c1_t1.b = nullkey_c2_t1.b;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
ERROR: router planner does not support queries that reference non-colocated distributed tables
|
|
DELETE FROM nullkey_c1_t1 USING reference_table WHERE nullkey_c1_t1.b = reference_table.b;
|
|
DEBUG: Creating router plan
|
|
DELETE FROM nullkey_c1_t1 USING distributed_table WHERE nullkey_c1_t1.b = distributed_table.b;
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
DELETE FROM nullkey_c1_t1 USING distributed_table WHERE nullkey_c1_t1.b = distributed_table.a;
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
DELETE FROM nullkey_c1_t1 USING citus_local_table WHERE nullkey_c1_t1.b = citus_local_table.b;
|
|
DEBUG: local table citus_local_table cannot be joined with these distributed tables
|
|
DEBUG: Wrapping relation "citus_local_table" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT b FROM query_single_shard_table.citus_local_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: DELETE FROM query_single_shard_table.nullkey_c1_t1 USING (SELECT NULL::integer AS a, citus_local_table_1.b FROM (SELECT intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(b integer)) citus_local_table_1) citus_local_table WHERE (nullkey_c1_t1.b OPERATOR(pg_catalog.=) citus_local_table.b)
|
|
DEBUG: Creating router plan
|
|
DELETE FROM nullkey_c1_t1 USING postgres_local_table WHERE nullkey_c1_t1.b = postgres_local_table.b;
|
|
DEBUG: relation postgres_local_table is not distributed
|
|
DEBUG: Wrapping relation "postgres_local_table" to a subquery
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT b FROM query_single_shard_table.postgres_local_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: DELETE FROM query_single_shard_table.nullkey_c1_t1 USING (SELECT NULL::integer AS a, postgres_local_table_1.b FROM (SELECT intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(b integer)) postgres_local_table_1) postgres_local_table WHERE (nullkey_c1_t1.b OPERATOR(pg_catalog.=) postgres_local_table.b)
|
|
DEBUG: Creating router plan
|
|
DELETE FROM reference_table USING nullkey_c1_t1 WHERE nullkey_c1_t1.b = reference_table.b;
|
|
ERROR: cannot perform select on a distributed table and modify a reference table
|
|
DELETE FROM distributed_table USING nullkey_c1_t1 WHERE nullkey_c1_t1.b = distributed_table.b;
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
DELETE FROM distributed_table USING nullkey_c1_t1 WHERE nullkey_c1_t1.b = distributed_table.a;
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
ERROR: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
DELETE FROM citus_local_table USING nullkey_c1_t1 WHERE nullkey_c1_t1.b = citus_local_table.b;
|
|
DEBUG: local table citus_local_table cannot be joined with these distributed tables
|
|
DEBUG: Wrapping relation "nullkey_c1_t1" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT b FROM query_single_shard_table.nullkey_c1_t1 WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: DELETE FROM query_single_shard_table.citus_local_table USING (SELECT NULL::integer AS a, nullkey_c1_t1_1.b FROM (SELECT intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(b integer)) nullkey_c1_t1_1) nullkey_c1_t1 WHERE (nullkey_c1_t1.b OPERATOR(pg_catalog.=) citus_local_table.b)
|
|
DEBUG: Creating router plan
|
|
DELETE FROM postgres_local_table USING nullkey_c1_t1 WHERE nullkey_c1_t1.b = postgres_local_table.b;
|
|
DEBUG: relation postgres_local_table is not distributed
|
|
DEBUG: Wrapping relation "nullkey_c1_t1" to a subquery
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT b FROM query_single_shard_table.nullkey_c1_t1 WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: DELETE FROM query_single_shard_table.postgres_local_table USING (SELECT NULL::integer AS a, nullkey_c1_t1_1.b FROM (SELECT intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(b integer)) nullkey_c1_t1_1) nullkey_c1_t1 WHERE (nullkey_c1_t1.b OPERATOR(pg_catalog.=) postgres_local_table.b)
|
|
DEBUG: Creating router plan
|
|
-- slightly more complex update queries
|
|
UPDATE nullkey_c1_t1 SET b = 5 WHERE nullkey_c1_t1.b IN (SELECT b FROM distributed_table);
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT b FROM query_single_shard_table.distributed_table
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: UPDATE query_single_shard_table.nullkey_c1_t1 SET b = 5 WHERE (b OPERATOR(pg_catalog.=) ANY (SELECT intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(b integer)))
|
|
DEBUG: Creating router plan
|
|
WITH cte AS materialized(
|
|
SELECT * FROM distributed_table
|
|
)
|
|
UPDATE nullkey_c1_t1 SET b = 5 FROM cte WHERE nullkey_c1_t1.b = cte.a;
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
DEBUG: generating subplan XXX_1 for CTE cte: SELECT a, b FROM query_single_shard_table.distributed_table
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: UPDATE query_single_shard_table.nullkey_c1_t1 SET b = 5 FROM (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) cte WHERE (nullkey_c1_t1.b OPERATOR(pg_catalog.=) cte.a)
|
|
DEBUG: Creating router plan
|
|
WITH cte AS (
|
|
SELECT reference_table.a AS a, 1 AS b
|
|
FROM distributed_table RIGHT JOIN reference_table USING (a)
|
|
)
|
|
UPDATE nullkey_c1_t1 SET b = 5 WHERE nullkey_c1_t1.b IN (SELECT b FROM cte);
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
DEBUG: generating subplan XXX_1 for CTE cte: SELECT reference_table.a, 1 AS b FROM (query_single_shard_table.distributed_table RIGHT JOIN query_single_shard_table.reference_table USING (a))
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: recursively planning left side of the right join since the outer side is a recurring rel
|
|
DEBUG: recursively planning distributed relation "distributed_table" since it is part of a distributed join node that is outer joined with a recurring rel
|
|
DEBUG: Wrapping relation "distributed_table" to a subquery
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.distributed_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT reference_table.a, 1 AS b FROM ((SELECT distributed_table_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) distributed_table_1) distributed_table RIGHT JOIN query_single_shard_table.reference_table USING (a))
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: UPDATE query_single_shard_table.nullkey_c1_t1 SET b = 5 WHERE (b OPERATOR(pg_catalog.=) ANY (SELECT cte.b FROM (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) cte))
|
|
DEBUG: Creating router plan
|
|
UPDATE nullkey_c1_t1 SET b = 5 FROM reference_table WHERE EXISTS (
|
|
SELECT 1 FROM reference_table LEFT JOIN nullkey_c1_t1 USING (a) WHERE nullkey_c1_t1.b IS NULL
|
|
);
|
|
DEBUG: Creating router plan
|
|
UPDATE nullkey_c1_t1 tx SET b = (
|
|
SELECT nullkey_c1_t2.b FROM nullkey_c1_t2 JOIN nullkey_c1_t1 ON (nullkey_c1_t1.a != nullkey_c1_t2.a) WHERE nullkey_c1_t1.a = tx.a ORDER BY 1 LIMIT 1
|
|
);
|
|
DEBUG: Creating router plan
|
|
UPDATE nullkey_c1_t1 tx SET b = t2.b FROM nullkey_c1_t1 t1 JOIN nullkey_c1_t2 t2 ON (t1.a = t2.a);
|
|
DEBUG: Creating router plan
|
|
WITH cte AS (
|
|
SELECT * FROM nullkey_c1_t2 ORDER BY 1,2 LIMIT 10
|
|
)
|
|
UPDATE nullkey_c1_t1 SET b = 5 WHERE nullkey_c1_t1.a IN (SELECT b FROM cte);
|
|
DEBUG: Creating router plan
|
|
UPDATE modify_fast_path SET value_1 = value_1 + 12 * value_1 WHERE key = 1;
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
UPDATE modify_fast_path SET value_1 = NULL WHERE value_1 = 15 AND (key = 1 OR value_2 = 'citus');
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
UPDATE modify_fast_path SET value_1 = 5 WHERE key = 2 RETURNING value_1 * 15, value_1::numeric * 16;
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
?column? | ?column?
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
UPDATE modify_fast_path
|
|
SET value_1 = 1
|
|
FROM modify_fast_path_reference
|
|
WHERE
|
|
modify_fast_path.key = modify_fast_path_reference.key AND
|
|
modify_fast_path.key = 1 AND
|
|
modify_fast_path_reference.key = 1;
|
|
DEBUG: Creating router plan
|
|
PREPARE p1 (int, int, int) AS
|
|
UPDATE modify_fast_path SET value_1 = value_1 + $1 WHERE key = $2 AND value_1 = $3;
|
|
EXECUTE p1(1,1,1);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p1(2,2,2);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p1(3,3,3);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p1(4,4,4);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p1(5,5,5);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p1(6,6,6);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p1(7,7,7);
|
|
PREPARE prepared_zero_shard_update(int) AS UPDATE modify_fast_path SET value_1 = 1 WHERE key = $1 AND false;
|
|
EXECUTE prepared_zero_shard_update(1);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_update(2);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_update(3);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_update(4);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_update(5);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_update(6);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_update(7);
|
|
-- slightly more complex delete queries
|
|
DELETE FROM nullkey_c1_t1 WHERE nullkey_c1_t1.b IN (SELECT b FROM distributed_table);
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT b FROM query_single_shard_table.distributed_table
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: DELETE FROM query_single_shard_table.nullkey_c1_t1 WHERE (b OPERATOR(pg_catalog.=) ANY (SELECT intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(b integer)))
|
|
DEBUG: Creating router plan
|
|
WITH cte AS materialized(
|
|
SELECT * FROM distributed_table
|
|
)
|
|
DELETE FROM nullkey_c1_t1 USING cte WHERE nullkey_c1_t1.b = cte.a;
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
DEBUG: generating subplan XXX_1 for CTE cte: SELECT a, b FROM query_single_shard_table.distributed_table
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: DELETE FROM query_single_shard_table.nullkey_c1_t1 USING (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) cte WHERE (nullkey_c1_t1.b OPERATOR(pg_catalog.=) cte.a)
|
|
DEBUG: Creating router plan
|
|
WITH cte AS (
|
|
SELECT reference_table.a AS a, 1 AS b
|
|
FROM distributed_table RIGHT JOIN reference_table USING (a)
|
|
)
|
|
DELETE FROM nullkey_c1_t1 WHERE nullkey_c1_t1.b IN (SELECT b FROM cte);
|
|
DEBUG: complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
|
|
DEBUG: generating subplan XXX_1 for CTE cte: SELECT reference_table.a, 1 AS b FROM (query_single_shard_table.distributed_table RIGHT JOIN query_single_shard_table.reference_table USING (a))
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: recursively planning left side of the right join since the outer side is a recurring rel
|
|
DEBUG: recursively planning distributed relation "distributed_table" since it is part of a distributed join node that is outer joined with a recurring rel
|
|
DEBUG: Wrapping relation "distributed_table" to a subquery
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.distributed_table WHERE true
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT reference_table.a, 1 AS b FROM ((SELECT distributed_table_1.a, NULL::integer AS b FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) distributed_table_1) distributed_table RIGHT JOIN query_single_shard_table.reference_table USING (a))
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: DELETE FROM query_single_shard_table.nullkey_c1_t1 WHERE (b OPERATOR(pg_catalog.=) ANY (SELECT cte.b FROM (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) cte))
|
|
DEBUG: Creating router plan
|
|
DELETE FROM nullkey_c1_t1 USING reference_table WHERE EXISTS (
|
|
SELECT 1 FROM reference_table LEFT JOIN nullkey_c1_t1 USING (a) WHERE nullkey_c1_t1.b IS NULL
|
|
);
|
|
DEBUG: Creating router plan
|
|
DELETE FROM nullkey_c1_t1 tx USING nullkey_c1_t1 t1 JOIN nullkey_c1_t2 t2 ON (t1.a = t2.a);
|
|
DEBUG: Creating router plan
|
|
WITH cte AS (
|
|
SELECT * FROM nullkey_c1_t2 ORDER BY 1,2 LIMIT 10
|
|
)
|
|
DELETE FROM nullkey_c1_t1 WHERE nullkey_c1_t1.a IN (SELECT b FROM cte);
|
|
DEBUG: Creating router plan
|
|
DELETE FROM modify_fast_path WHERE value_1 = 15 AND (key = 1 OR value_2 = 'citus');
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DELETE FROM modify_fast_path WHERE key = 2 RETURNING value_1 * 15, value_1::numeric * 16;
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
?column? | ?column?
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
DELETE FROM modify_fast_path
|
|
USING modify_fast_path_reference
|
|
WHERE
|
|
modify_fast_path.key = modify_fast_path_reference.key AND
|
|
modify_fast_path.key = 1 AND
|
|
modify_fast_path_reference.key = 1;
|
|
DEBUG: Creating router plan
|
|
PREPARE p2 (int, int, int) AS
|
|
DELETE FROM modify_fast_path WHERE key = ($2)*$1 AND value_1 = $3;
|
|
EXECUTE p2(1,1,1);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p2(2,2,2);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p2(3,3,3);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p2(4,4,4);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p2(5,5,5);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p2(6,6,6);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE p2(7,7,7);
|
|
PREPARE prepared_zero_shard_delete(int) AS DELETE FROM modify_fast_path WHERE key = $1 AND false;
|
|
EXECUTE prepared_zero_shard_delete(1);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_delete(2);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_delete(3);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_delete(4);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_delete(5);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_delete(6);
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
EXECUTE prepared_zero_shard_delete(7);
|
|
-- test modifying ctes
|
|
WITH cte AS (
|
|
UPDATE modify_fast_path SET value_1 = value_1 + 1 WHERE key = 1 RETURNING *
|
|
)
|
|
SELECT * FROM cte;
|
|
DEBUG: Creating router plan
|
|
key | value_1 | value_2
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
WITH cte AS (
|
|
DELETE FROM modify_fast_path WHERE key = 1 RETURNING *
|
|
)
|
|
SELECT * FROM modify_fast_path;
|
|
DEBUG: Creating router plan
|
|
key | value_1 | value_2
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
WITH cte AS (
|
|
DELETE FROM modify_fast_path WHERE key = 1 RETURNING *
|
|
)
|
|
SELECT * FROM modify_fast_path_reference WHERE key IN (SELECT key FROM cte);
|
|
DEBUG: Creating router plan
|
|
key | value_1 | value_2
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
WITH cte AS (
|
|
DELETE FROM reference_table WHERE a = 1 RETURNING *
|
|
)
|
|
SELECT * FROM nullkey_c1_t1 WHERE a IN (SELECT a FROM cte);
|
|
DEBUG: cannot router plan modification of a non-distributed table
|
|
DEBUG: generating subplan XXX_1 for CTE cte: DELETE FROM query_single_shard_table.reference_table WHERE (a OPERATOR(pg_catalog.=) 1) RETURNING a, b
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT a, b FROM query_single_shard_table.nullkey_c1_t1 WHERE (a OPERATOR(pg_catalog.=) ANY (SELECT cte.a FROM (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) cte))
|
|
DEBUG: Creating router plan
|
|
a | b
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
WITH cte AS (
|
|
DELETE FROM nullkey_c1_t1 WHERE a = 1 RETURNING *
|
|
)
|
|
SELECT * FROM nullkey_c1_t2 WHERE a IN (SELECT a FROM cte);
|
|
DEBUG: Creating router plan
|
|
a | b
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
WITH cte AS (
|
|
DELETE FROM nullkey_c1_t1 WHERE a = 1 RETURNING *
|
|
)
|
|
SELECT * FROM nullkey_c2_t1 WHERE a IN (SELECT a FROM cte);
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: generating subplan XXX_1 for CTE cte: DELETE FROM query_single_shard_table.nullkey_c1_t1 WHERE (a OPERATOR(pg_catalog.=) 1) RETURNING a, b
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT a, b FROM query_single_shard_table.nullkey_c2_t1 WHERE (a OPERATOR(pg_catalog.=) ANY (SELECT cte.a FROM (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) cte))
|
|
DEBUG: Creating router plan
|
|
a | b
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
WITH cte AS (
|
|
DELETE FROM nullkey_c1_t1 WHERE a = 1 RETURNING *
|
|
)
|
|
SELECT * FROM distributed_table WHERE a IN (SELECT a FROM cte);
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
DEBUG: generating subplan XXX_1 for CTE cte: DELETE FROM query_single_shard_table.nullkey_c1_t1 WHERE (a OPERATOR(pg_catalog.=) 1) RETURNING a, b
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT a, b FROM query_single_shard_table.distributed_table WHERE (a OPERATOR(pg_catalog.=) ANY (SELECT cte.a FROM (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) cte))
|
|
DEBUG: Router planner cannot handle multi-shard select queries
|
|
a | b
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
-- Below two queries fail very late when
|
|
-- citus.enable_non_colocated_router_query_pushdown is set to on.
|
|
SET citus.enable_non_colocated_router_query_pushdown TO ON;
|
|
WITH cte AS (
|
|
DELETE FROM distributed_table WHERE a = 1 RETURNING *
|
|
)
|
|
SELECT * FROM nullkey_c1_t1 WHERE a IN (SELECT a FROM cte);
|
|
DEBUG: Creating router plan
|
|
DEBUG: query has a single distribution column value: 1
|
|
ERROR: relation "query_single_shard_table.nullkey_c1_t1_1620000" does not exist
|
|
CONTEXT: while executing command on localhost:xxxxx
|
|
WITH cte AS (
|
|
DELETE FROM distributed_table WHERE a = 1 RETURNING *
|
|
)
|
|
SELECT * FROM nullkey_c1_t1 WHERE b IN (SELECT b FROM cte);
|
|
DEBUG: Creating router plan
|
|
DEBUG: query has a single distribution column value: 1
|
|
ERROR: relation "query_single_shard_table.nullkey_c1_t1_1620000" does not exist
|
|
CONTEXT: while executing command on localhost:xxxxx
|
|
SET citus.enable_non_colocated_router_query_pushdown TO OFF;
|
|
WITH cte AS (
|
|
DELETE FROM distributed_table WHERE a = 1 RETURNING *
|
|
)
|
|
SELECT * FROM nullkey_c1_t1 WHERE a IN (SELECT a FROM cte);
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: generating subplan XXX_1 for CTE cte: DELETE FROM query_single_shard_table.distributed_table WHERE (a OPERATOR(pg_catalog.=) 1) RETURNING a, b
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: query has a single distribution column value: 1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT a, b FROM query_single_shard_table.nullkey_c1_t1 WHERE (a OPERATOR(pg_catalog.=) ANY (SELECT cte.a FROM (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) cte))
|
|
DEBUG: Creating router plan
|
|
a | b
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
WITH cte AS (
|
|
DELETE FROM distributed_table WHERE a = 1 RETURNING *
|
|
)
|
|
SELECT * FROM nullkey_c1_t1 WHERE b IN (SELECT b FROM cte);
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: generating subplan XXX_1 for CTE cte: DELETE FROM query_single_shard_table.distributed_table WHERE (a OPERATOR(pg_catalog.=) 1) RETURNING a, b
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: query has a single distribution column value: 1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT a, b FROM query_single_shard_table.nullkey_c1_t1 WHERE (b OPERATOR(pg_catalog.=) ANY (SELECT cte.b FROM (SELECT intermediate_result.a, intermediate_result.b FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer, b integer)) cte))
|
|
DEBUG: Creating router plan
|
|
a | b
|
|
---------------------------------------------------------------------
|
|
(0 rows)
|
|
|
|
RESET citus.enable_non_colocated_router_query_pushdown;
|
|
WITH cte AS (
|
|
UPDATE modify_fast_path SET value_1 = value_1 + 1 WHERE key = 1 RETURNING *
|
|
)
|
|
UPDATE modify_fast_path SET value_1 = value_1 + 1 WHERE key = 1;
|
|
DEBUG: Creating router plan
|
|
WITH cte AS (
|
|
DELETE FROM modify_fast_path WHERE key = 1 RETURNING *
|
|
)
|
|
DELETE FROM modify_fast_path WHERE key = 1;
|
|
DEBUG: Creating router plan
|
|
-- test window functions
|
|
SELECT
|
|
user_id, avg(avg(value_3)) OVER (PARTITION BY user_id, MIN(value_2))
|
|
FROM
|
|
raw_events_first
|
|
GROUP BY
|
|
1
|
|
ORDER BY
|
|
2 DESC NULLS LAST, 1 DESC;
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
user_id | avg
|
|
---------------------------------------------------------------------
|
|
6 | 6000.1
|
|
5 | 5000.1
|
|
4 | 4000.1
|
|
3 | 3000.1
|
|
2 | 2000.1
|
|
1 | 1000.1
|
|
105 |
|
|
104 |
|
|
103 |
|
|
102 |
|
|
101 |
|
|
100 |
|
|
(12 rows)
|
|
|
|
SELECT
|
|
user_id, max(value_1) OVER (PARTITION BY user_id, MIN(value_2))
|
|
FROM (
|
|
SELECT
|
|
DISTINCT us.user_id, us.value_2, us.value_1, random() as r1
|
|
FROM
|
|
raw_events_first as us, raw_events_second
|
|
WHERE
|
|
us.user_id = raw_events_second.user_id
|
|
ORDER BY
|
|
user_id, value_2
|
|
) s
|
|
GROUP BY
|
|
1, value_1
|
|
ORDER BY
|
|
2 DESC, 1;
|
|
DEBUG: Creating router plan
|
|
user_id | max
|
|
---------------------------------------------------------------------
|
|
1 |
|
|
2 |
|
|
3 |
|
|
4 |
|
|
5 |
|
|
6 |
|
|
6 | 60
|
|
5 | 50
|
|
4 | 40
|
|
3 | 30
|
|
2 | 20
|
|
1 | 10
|
|
5 | 5
|
|
4 | 4
|
|
3 | 3
|
|
2 | 2
|
|
1 | 1
|
|
(17 rows)
|
|
|
|
SELECT
|
|
DISTINCT ON (raw_events_second.user_id, rnk) raw_events_second.user_id, rank() OVER my_win AS rnk
|
|
FROM
|
|
raw_events_second, raw_events_first
|
|
WHERE
|
|
raw_events_first.user_id = raw_events_second.user_id
|
|
WINDOW
|
|
my_win AS (PARTITION BY raw_events_second.user_id, raw_events_first.value_1 ORDER BY raw_events_second.time DESC)
|
|
ORDER BY
|
|
rnk DESC, 1 DESC
|
|
LIMIT 10;
|
|
DEBUG: Creating router plan
|
|
user_id | rnk
|
|
---------------------------------------------------------------------
|
|
6 | 2
|
|
5 | 2
|
|
4 | 2
|
|
3 | 2
|
|
2 | 2
|
|
1 | 2
|
|
6 | 1
|
|
5 | 1
|
|
4 | 1
|
|
3 | 1
|
|
(10 rows)
|
|
|
|
-- more tests with ctes and subqueries
|
|
-- CTEs are recursively planned, and subquery foo is also recursively planned.
|
|
-- Then the final plan becomes a router plan.
|
|
WITH cte AS MATERIALIZED (
|
|
WITH local_cte AS MATERIALIZED (
|
|
SELECT * FROM users_table_local
|
|
),
|
|
dist_cte AS MATERIALIZED (
|
|
SELECT user_id FROM colocated_events_table
|
|
)
|
|
SELECT dist_cte.user_id FROM local_cte JOIN dist_cte ON dist_cte.user_id=local_cte.user_id
|
|
)
|
|
SELECT count(*)
|
|
FROM cte,
|
|
(
|
|
SELECT DISTINCT users_table.user_id
|
|
FROM users_table, colocated_events_table
|
|
WHERE users_table.user_id = colocated_events_table.user_id AND event_type IN (1,2,3,4)
|
|
ORDER BY 1 DESC LIMIT 5
|
|
) AS foo
|
|
WHERE foo.user_id = cte.user_id;
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: generating subplan XXX_1 for CTE cte: WITH local_cte AS MATERIALIZED (SELECT users_table_local.user_id, users_table_local."time", users_table_local.value_1, users_table_local.value_2, users_table_local.value_3, users_table_local.value_4 FROM query_single_shard_table.users_table_local), dist_cte AS MATERIALIZED (SELECT colocated_events_table.user_id FROM query_single_shard_table.colocated_events_table) SELECT dist_cte.user_id FROM (local_cte JOIN dist_cte ON ((dist_cte.user_id OPERATOR(pg_catalog.=) local_cte.user_id)))
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: generating subplan XXX_1 for CTE local_cte: SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM query_single_shard_table.users_table_local
|
|
DEBUG: generating subplan XXX_2 for CTE dist_cte: SELECT user_id FROM query_single_shard_table.colocated_events_table
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT dist_cte.user_id FROM ((SELECT intermediate_result.user_id, intermediate_result."time", intermediate_result.value_1, intermediate_result.value_2, intermediate_result.value_3, intermediate_result.value_4 FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, "time" timestamp without time zone, value_1 integer, value_2 integer, value_3 double precision, value_4 bigint)) local_cte JOIN (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) dist_cte ON ((dist_cte.user_id OPERATOR(pg_catalog.=) local_cte.user_id)))
|
|
DEBUG: Creating router plan
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT DISTINCT users_table.user_id FROM query_single_shard_table.users_table, query_single_shard_table.colocated_events_table WHERE ((users_table.user_id OPERATOR(pg_catalog.=) colocated_events_table.user_id) AND (colocated_events_table.event_type OPERATOR(pg_catalog.=) ANY (ARRAY[1, 2, 3, 4]))) ORDER BY users_table.user_id DESC LIMIT 5
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte, (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo WHERE (foo.user_id OPERATOR(pg_catalog.=) cte.user_id)
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
1644
|
|
(1 row)
|
|
|
|
-- CTEs are colocated, route entire query.
|
|
WITH cte1 AS (
|
|
SELECT * FROM users_table WHERE user_id = 1
|
|
), cte2 AS (
|
|
SELECT * FROM colocated_events_table WHERE user_id = 1
|
|
)
|
|
SELECT cte1.user_id, cte1.value_1, cte2.user_id, cte2.event_type
|
|
FROM cte1, cte2
|
|
ORDER BY cte1.user_id, cte1.value_1, cte2.user_id, cte2.event_type
|
|
LIMIT 5;
|
|
DEBUG: CTE cte1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte2 is going to be inlined via distributed planning
|
|
DEBUG: Creating router plan
|
|
user_id | value_1 | user_id | event_type
|
|
---------------------------------------------------------------------
|
|
1 | 1 | 1 | 0
|
|
1 | 1 | 1 | 0
|
|
1 | 1 | 1 | 1
|
|
1 | 1 | 1 | 1
|
|
1 | 1 | 1 | 2
|
|
(5 rows)
|
|
|
|
-- CTEs aren't colocated, CTEs become intermediate results.
|
|
WITH cte1 AS MATERIALIZED (
|
|
SELECT * FROM users_table WHERE user_id = 1
|
|
), cte2 AS MATERIALIZED (
|
|
SELECT * FROM non_colocated_events_table WHERE user_id = 6
|
|
)
|
|
SELECT cte1.user_id, cte1.value_1, cte2.user_id, cte2.user_id
|
|
FROM cte1, cte2
|
|
ORDER BY cte1.user_id, cte1.value_1, cte2.user_id, cte2.event_type
|
|
LIMIT 5;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: generating subplan XXX_1 for CTE cte1: SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM query_single_shard_table.users_table WHERE (user_id OPERATOR(pg_catalog.=) 1)
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for CTE cte2: SELECT user_id, "time", event_type, value_2, value_3, value_4 FROM query_single_shard_table.non_colocated_events_table WHERE (user_id OPERATOR(pg_catalog.=) 6)
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT cte1.user_id, cte1.value_1, cte2.user_id, cte2.user_id FROM (SELECT intermediate_result.user_id, intermediate_result."time", intermediate_result.value_1, intermediate_result.value_2, intermediate_result.value_3, intermediate_result.value_4 FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, "time" timestamp without time zone, value_1 integer, value_2 integer, value_3 double precision, value_4 bigint)) cte1, (SELECT intermediate_result.user_id, intermediate_result."time", intermediate_result.event_type, intermediate_result.value_2, intermediate_result.value_3, intermediate_result.value_4 FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, "time" timestamp without time zone, event_type integer, value_2 integer, value_3 double precision, value_4 bigint)) cte2 ORDER BY cte1.user_id, cte1.value_1, cte2.user_id, cte2.event_type LIMIT 5
|
|
DEBUG: Creating router plan
|
|
user_id | value_1 | user_id | user_id
|
|
---------------------------------------------------------------------
|
|
1 | 1 | 6 | 6
|
|
1 | 1 | 6 | 6
|
|
1 | 1 | 6 | 6
|
|
1 | 1 | 6 | 6
|
|
1 | 1 | 6 | 6
|
|
(5 rows)
|
|
|
|
-- users_table & colocated_users_table are colocated, route entire query.
|
|
WITH cte1 AS (
|
|
SELECT * FROM users_table WHERE user_id = 1
|
|
)
|
|
UPDATE colocated_users_table dt SET value = cte1.value_1
|
|
FROM cte1 WHERE cte1.user_id = dt.id AND dt.id = 1;
|
|
DEBUG: Creating router plan
|
|
-- users_table & non_colocated_users_table are not colocated, cte is recursive planned.
|
|
WITH cte1 AS (
|
|
SELECT * FROM users_table WHERE user_id = 1
|
|
)
|
|
UPDATE non_colocated_users_table dt SET value = cte1.value_1
|
|
FROM cte1 WHERE cte1.user_id = dt.id AND dt.id = 1;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: generating subplan XXX_1 for CTE cte1: SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM query_single_shard_table.users_table WHERE (user_id OPERATOR(pg_catalog.=) 1)
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: UPDATE query_single_shard_table.non_colocated_users_table dt SET value = cte1.value_1 FROM (SELECT intermediate_result.user_id, intermediate_result."time", intermediate_result.value_1, intermediate_result.value_2, intermediate_result.value_3, intermediate_result.value_4 FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, "time" timestamp without time zone, value_1 integer, value_2 integer, value_3 double precision, value_4 bigint)) cte1 WHERE ((cte1.user_id OPERATOR(pg_catalog.=) dt.id) AND (dt.id OPERATOR(pg_catalog.=) 1))
|
|
DEBUG: Creating router plan
|
|
-- All relations are not colocated, CTEs become intermediate results.
|
|
WITH cte1 AS MATERIALIZED (
|
|
SELECT * FROM users_table WHERE user_id = 1
|
|
), cte2 AS MATERIALIZED (
|
|
SELECT * FROM non_colocated_events_table WHERE user_id = 6
|
|
)
|
|
UPDATE non_colocated_users_table dt SET value = cte1.value_1 + cte2.event_type
|
|
FROM cte1, cte2 WHERE cte1.user_id = dt.id AND dt.id = 1;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: generating subplan XXX_1 for CTE cte1: SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM query_single_shard_table.users_table WHERE (user_id OPERATOR(pg_catalog.=) 1)
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for CTE cte2: SELECT user_id, "time", event_type, value_2, value_3, value_4 FROM query_single_shard_table.non_colocated_events_table WHERE (user_id OPERATOR(pg_catalog.=) 6)
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: UPDATE query_single_shard_table.non_colocated_users_table dt SET value = (cte1.value_1 OPERATOR(pg_catalog.+) cte2.event_type) FROM (SELECT intermediate_result.user_id, intermediate_result."time", intermediate_result.value_1, intermediate_result.value_2, intermediate_result.value_3, intermediate_result.value_4 FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, "time" timestamp without time zone, value_1 integer, value_2 integer, value_3 double precision, value_4 bigint)) cte1, (SELECT intermediate_result.user_id, intermediate_result."time", intermediate_result.event_type, intermediate_result.value_2, intermediate_result.value_3, intermediate_result.value_4 FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, "time" timestamp without time zone, event_type integer, value_2 integer, value_3 double precision, value_4 bigint)) cte2 WHERE ((cte1.user_id OPERATOR(pg_catalog.=) dt.id) AND (dt.id OPERATOR(pg_catalog.=) 1))
|
|
DEBUG: Creating router plan
|
|
-- Volatile function calls should not be routed.
|
|
WITH cte1 AS MATERIALIZED (SELECT id, value FROM func())
|
|
UPDATE colocated_users_table dt SET value = cte1.value
|
|
FROM cte1 WHERE dt.id = 1;
|
|
DEBUG: Router planner doesn't support VOLATILE functions in common table expressions.
|
|
DEBUG: generating subplan XXX_1 for CTE cte1: SELECT id, value FROM query_single_shard_table.func() func(id, value)
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: UPDATE query_single_shard_table.colocated_users_table dt SET value = cte1.value FROM (SELECT intermediate_result.id, intermediate_result.value FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(id integer, value integer)) cte1 WHERE (dt.id OPERATOR(pg_catalog.=) 1)
|
|
DEBUG: Creating router plan
|
|
-- CTEs are recursively planned, and subquery foo is also recursively planned.
|
|
WITH cte AS MATERIALIZED (
|
|
WITH local_cte AS MATERIALIZED (
|
|
SELECT * FROM users_table_local
|
|
),
|
|
dist_cte AS MATERIALIZED (
|
|
SELECT user_id FROM colocated_events_table
|
|
)
|
|
SELECT dist_cte.user_id FROM local_cte JOIN dist_cte ON dist_cte.user_id=local_cte.user_id
|
|
)
|
|
SELECT count(*)
|
|
FROM
|
|
cte,
|
|
(
|
|
SELECT DISTINCT users_table.user_id
|
|
FROM users_table, colocated_events_table
|
|
WHERE users_table.user_id = colocated_events_table.user_id AND event_type IN (1,2,3,4)
|
|
ORDER BY 1 DESC LIMIT 5
|
|
) AS foo, colocated_events_table
|
|
WHERE foo.user_id = cte.user_id AND colocated_events_table.user_id = cte.user_id;
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: generating subplan XXX_1 for CTE cte: WITH local_cte AS MATERIALIZED (SELECT users_table_local.user_id, users_table_local."time", users_table_local.value_1, users_table_local.value_2, users_table_local.value_3, users_table_local.value_4 FROM query_single_shard_table.users_table_local), dist_cte AS MATERIALIZED (SELECT colocated_events_table.user_id FROM query_single_shard_table.colocated_events_table) SELECT dist_cte.user_id FROM (local_cte JOIN dist_cte ON ((dist_cte.user_id OPERATOR(pg_catalog.=) local_cte.user_id)))
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: generating subplan XXX_1 for CTE local_cte: SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM query_single_shard_table.users_table_local
|
|
DEBUG: generating subplan XXX_2 for CTE dist_cte: SELECT user_id FROM query_single_shard_table.colocated_events_table
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT dist_cte.user_id FROM ((SELECT intermediate_result.user_id, intermediate_result."time", intermediate_result.value_1, intermediate_result.value_2, intermediate_result.value_3, intermediate_result.value_4 FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, "time" timestamp without time zone, value_1 integer, value_2 integer, value_3 double precision, value_4 bigint)) local_cte JOIN (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) dist_cte ON ((dist_cte.user_id OPERATOR(pg_catalog.=) local_cte.user_id)))
|
|
DEBUG: Creating router plan
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT DISTINCT users_table.user_id FROM query_single_shard_table.users_table, query_single_shard_table.colocated_events_table WHERE ((users_table.user_id OPERATOR(pg_catalog.=) colocated_events_table.user_id) AND (colocated_events_table.event_type OPERATOR(pg_catalog.=) ANY (ARRAY[1, 2, 3, 4]))) ORDER BY users_table.user_id DESC LIMIT 5
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte, (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo, query_single_shard_table.colocated_events_table WHERE ((foo.user_id OPERATOR(pg_catalog.=) cte.user_id) AND (colocated_events_table.user_id OPERATOR(pg_catalog.=) cte.user_id))
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
30608
|
|
(1 row)
|
|
|
|
-- CTEs are replaced and subquery in WHERE is also replaced.
|
|
WITH cte AS MATERIALIZED (
|
|
WITH local_cte AS MATERIALIZED (
|
|
SELECT * FROM users_table_local
|
|
),
|
|
dist_cte AS MATERIALIZED (
|
|
SELECT user_id FROM colocated_events_table
|
|
)
|
|
SELECT dist_cte.user_id FROM local_cte JOIN dist_cte ON dist_cte.user_id=local_cte.user_id
|
|
)
|
|
SELECT DISTINCT cte.user_id
|
|
FROM users_table, cte
|
|
WHERE users_table.user_id = cte.user_id AND
|
|
users_table.user_id IN (
|
|
SELECT DISTINCT value_2 FROM users_table WHERE value_1 >= 1 AND value_1 <= 20 ORDER BY 1 LIMIT 5
|
|
)
|
|
ORDER BY 1 DESC;
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: generating subplan XXX_1 for CTE cte: WITH local_cte AS MATERIALIZED (SELECT users_table_local.user_id, users_table_local."time", users_table_local.value_1, users_table_local.value_2, users_table_local.value_3, users_table_local.value_4 FROM query_single_shard_table.users_table_local), dist_cte AS MATERIALIZED (SELECT colocated_events_table.user_id FROM query_single_shard_table.colocated_events_table) SELECT dist_cte.user_id FROM (local_cte JOIN dist_cte ON ((dist_cte.user_id OPERATOR(pg_catalog.=) local_cte.user_id)))
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: generating subplan XXX_1 for CTE local_cte: SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM query_single_shard_table.users_table_local
|
|
DEBUG: generating subplan XXX_2 for CTE dist_cte: SELECT user_id FROM query_single_shard_table.colocated_events_table
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT dist_cte.user_id FROM ((SELECT intermediate_result.user_id, intermediate_result."time", intermediate_result.value_1, intermediate_result.value_2, intermediate_result.value_3, intermediate_result.value_4 FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, "time" timestamp without time zone, value_1 integer, value_2 integer, value_3 double precision, value_4 bigint)) local_cte JOIN (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) dist_cte ON ((dist_cte.user_id OPERATOR(pg_catalog.=) local_cte.user_id)))
|
|
DEBUG: Creating router plan
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT DISTINCT value_2 FROM query_single_shard_table.users_table WHERE ((value_1 OPERATOR(pg_catalog.>=) 1) AND (value_1 OPERATOR(pg_catalog.<=) 20)) ORDER BY value_2 LIMIT 5
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT DISTINCT cte.user_id FROM query_single_shard_table.users_table, (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte WHERE ((users_table.user_id OPERATOR(pg_catalog.=) cte.user_id) AND (users_table.user_id OPERATOR(pg_catalog.=) ANY (SELECT intermediate_result.value_2 FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(value_2 integer)))) ORDER BY cte.user_id DESC
|
|
DEBUG: Creating router plan
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(4 rows)
|
|
|
|
-- Subquery in WHERE clause is planned recursively due to the recurring table
|
|
-- in FROM clause.
|
|
WITH cte AS MATERIALIZED (
|
|
WITH local_cte AS MATERIALIZED (
|
|
SELECT * FROM users_table_local
|
|
),
|
|
dist_cte AS MATERIALIZED (
|
|
SELECT user_id FROM colocated_events_table
|
|
)
|
|
SELECT dist_cte.user_id FROM local_cte JOIN dist_cte ON dist_cte.user_id=local_cte.user_id
|
|
)
|
|
SELECT DISTINCT cte.user_id
|
|
FROM cte
|
|
WHERE cte.user_id IN (SELECT DISTINCT user_id FROM users_table WHERE value_1 >= 1 AND value_1 <= 20)
|
|
ORDER BY 1 DESC;
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: generating subplan XXX_1 for CTE cte: WITH local_cte AS MATERIALIZED (SELECT users_table_local.user_id, users_table_local."time", users_table_local.value_1, users_table_local.value_2, users_table_local.value_3, users_table_local.value_4 FROM query_single_shard_table.users_table_local), dist_cte AS MATERIALIZED (SELECT colocated_events_table.user_id FROM query_single_shard_table.colocated_events_table) SELECT dist_cte.user_id FROM (local_cte JOIN dist_cte ON ((dist_cte.user_id OPERATOR(pg_catalog.=) local_cte.user_id)))
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: generating subplan XXX_1 for CTE local_cte: SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM query_single_shard_table.users_table_local
|
|
DEBUG: generating subplan XXX_2 for CTE dist_cte: SELECT user_id FROM query_single_shard_table.colocated_events_table
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT dist_cte.user_id FROM ((SELECT intermediate_result.user_id, intermediate_result."time", intermediate_result.value_1, intermediate_result.value_2, intermediate_result.value_3, intermediate_result.value_4 FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, "time" timestamp without time zone, value_1 integer, value_2 integer, value_3 double precision, value_4 bigint)) local_cte JOIN (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) dist_cte ON ((dist_cte.user_id OPERATOR(pg_catalog.=) local_cte.user_id)))
|
|
DEBUG: Creating router plan
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT DISTINCT user_id FROM query_single_shard_table.users_table WHERE ((value_1 OPERATOR(pg_catalog.>=) 1) AND (value_1 OPERATOR(pg_catalog.<=) 20))
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT DISTINCT user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte WHERE (user_id OPERATOR(pg_catalog.=) ANY (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer))) ORDER BY user_id DESC
|
|
DEBUG: Creating router plan
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
6
|
|
5
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(6 rows)
|
|
|
|
-- CTEs inside a subquery and the final query becomes a router
|
|
-- query.
|
|
SELECT
|
|
user_id
|
|
FROM
|
|
(
|
|
WITH cte AS MATERIALIZED (
|
|
SELECT DISTINCT users_table.user_id
|
|
FROM users_table, colocated_events_table
|
|
WHERE users_table.user_id = colocated_events_table.user_id AND
|
|
event_type IN (1,2,3,4)
|
|
)
|
|
SELECT * FROM cte ORDER BY 1 DESC
|
|
) AS foo
|
|
ORDER BY 1 DESC;
|
|
DEBUG: Creating router plan
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
6
|
|
5
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(6 rows)
|
|
|
|
-- CTEs inside a deeper subquery and also the subquery that contains the CTE are
|
|
-- recursively planned.
|
|
SELECT DISTINCT bar.user_id
|
|
FROM
|
|
(
|
|
WITH cte AS MATERIALIZED (
|
|
SELECT DISTINCT users_table.user_id
|
|
FROM users_table, colocated_events_table
|
|
WHERE users_table.user_id = colocated_events_table.user_id AND event_type IN (1,2,3,4)
|
|
)
|
|
SELECT * FROM cte ORDER BY 1 DESC
|
|
) AS foo,
|
|
(
|
|
SELECT users_table.user_id, some_events.event_type
|
|
FROM
|
|
users_table,
|
|
(
|
|
WITH cte AS MATERIALIZED (
|
|
SELECT event_type, users_table.user_id
|
|
FROM users_table, colocated_events_table
|
|
WHERE users_table.user_id = colocated_events_table.user_id AND value_1 IN (1,2)
|
|
) SELECT * FROM cte ORDER BY 1 DESC
|
|
) AS some_events
|
|
WHERE users_table.user_id = some_events.user_id AND event_type IN (1,2,3,4)
|
|
ORDER BY 2,1 LIMIT 2
|
|
) AS bar
|
|
WHERE foo.user_id = bar.user_id
|
|
ORDER BY 1 DESC LIMIT 5;
|
|
DEBUG: Creating router plan
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
1
|
|
(1 row)
|
|
|
|
-- Recursively plan subqueries inside the CTEs that contains LIMIT and OFFSET.
|
|
WITH cte AS MATERIALIZED (
|
|
WITH local_cte AS MATERIALIZED (
|
|
SELECT * FROM users_table_local
|
|
),
|
|
dist_cte AS MATERIALIZED (
|
|
SELECT
|
|
user_id
|
|
FROM
|
|
colocated_events_table,
|
|
(SELECT DISTINCT value_2 FROM users_table OFFSET 0) as foo
|
|
WHERE
|
|
colocated_events_table.user_id = foo.value_2 AND
|
|
colocated_events_table.user_id IN (SELECT DISTINCT value_1 FROM users_table ORDER BY 1 LIMIT 3)
|
|
)
|
|
SELECT dist_cte.user_id FROM local_cte JOIN dist_cte ON dist_cte.user_id=local_cte.user_id
|
|
)
|
|
SELECT count(*)
|
|
FROM
|
|
cte,
|
|
(
|
|
SELECT DISTINCT users_table.user_id
|
|
FROM users_table, colocated_events_table
|
|
WHERE users_table.user_id = colocated_events_table.user_id AND event_type IN (1,2,3,4)
|
|
ORDER BY 1 DESC LIMIT 5
|
|
) AS foo
|
|
WHERE foo.user_id = cte.user_id;
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: generating subplan XXX_1 for CTE cte: WITH local_cte AS MATERIALIZED (SELECT users_table_local.user_id, users_table_local."time", users_table_local.value_1, users_table_local.value_2, users_table_local.value_3, users_table_local.value_4 FROM query_single_shard_table.users_table_local), dist_cte AS MATERIALIZED (SELECT colocated_events_table.user_id FROM query_single_shard_table.colocated_events_table, (SELECT DISTINCT users_table.value_2 FROM query_single_shard_table.users_table OFFSET 0) foo WHERE ((colocated_events_table.user_id OPERATOR(pg_catalog.=) foo.value_2) AND (colocated_events_table.user_id OPERATOR(pg_catalog.=) ANY (SELECT DISTINCT users_table.value_1 FROM query_single_shard_table.users_table ORDER BY users_table.value_1 LIMIT 3)))) SELECT dist_cte.user_id FROM (local_cte JOIN dist_cte ON ((dist_cte.user_id OPERATOR(pg_catalog.=) local_cte.user_id)))
|
|
DEBUG: Local tables cannot be used in distributed queries.
|
|
DEBUG: generating subplan XXX_1 for CTE local_cte: SELECT user_id, "time", value_1, value_2, value_3, value_4 FROM query_single_shard_table.users_table_local
|
|
DEBUG: generating subplan XXX_2 for CTE dist_cte: SELECT colocated_events_table.user_id FROM query_single_shard_table.colocated_events_table, (SELECT DISTINCT users_table.value_2 FROM query_single_shard_table.users_table OFFSET 0) foo WHERE ((colocated_events_table.user_id OPERATOR(pg_catalog.=) foo.value_2) AND (colocated_events_table.user_id OPERATOR(pg_catalog.=) ANY (SELECT DISTINCT users_table.value_1 FROM query_single_shard_table.users_table ORDER BY users_table.value_1 LIMIT 3)))
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT dist_cte.user_id FROM ((SELECT intermediate_result.user_id, intermediate_result."time", intermediate_result.value_1, intermediate_result.value_2, intermediate_result.value_3, intermediate_result.value_4 FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, "time" timestamp without time zone, value_1 integer, value_2 integer, value_3 double precision, value_4 bigint)) local_cte JOIN (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) dist_cte ON ((dist_cte.user_id OPERATOR(pg_catalog.=) local_cte.user_id)))
|
|
DEBUG: Creating router plan
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT DISTINCT users_table.user_id FROM query_single_shard_table.users_table, query_single_shard_table.colocated_events_table WHERE ((users_table.user_id OPERATOR(pg_catalog.=) colocated_events_table.user_id) AND (colocated_events_table.event_type OPERATOR(pg_catalog.=) ANY (ARRAY[1, 2, 3, 4]))) ORDER BY users_table.user_id DESC LIMIT 5
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte, (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo WHERE (foo.user_id OPERATOR(pg_catalog.=) cte.user_id)
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
432
|
|
(1 row)
|
|
|
|
-- more tests with sublinks and subqueries in targetlist
|
|
SELECT event_type, (SELECT e.value_2 FROM users_reference_table WHERE user_id = 1 AND value_1 = 1), (SELECT e.value_2)
|
|
FROM non_colocated_events_table e
|
|
ORDER BY 1,2 LIMIT 1;
|
|
DEBUG: Creating router plan
|
|
event_type | value_2 | value_2
|
|
---------------------------------------------------------------------
|
|
0 | | 0
|
|
(1 row)
|
|
|
|
SELECT event_type, (SELECT time FROM users_table WHERE user_id = e.user_id ORDER BY time LIMIT 1)
|
|
FROM non_colocated_events_table e
|
|
ORDER BY 1,2 LIMIT 1;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: push down of limit count: 1
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: users_table and non_colocated_events_table are not colocated
|
|
SELECT event_type, (SELECT max(time) FROM users_table WHERE user_id = e.value_2)
|
|
FROM non_colocated_events_table e
|
|
ORDER BY 1,2 LIMIT 1;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: push down of limit count: 1
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: users_table and non_colocated_events_table are not colocated
|
|
SELECT event_type, (SELECT max(time) FROM users_table)
|
|
FROM non_colocated_events_table e
|
|
ORDER BY 1,2 LIMIT 1;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT max("time") AS max FROM query_single_shard_table.users_table
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT event_type, (SELECT intermediate_result.max FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(max timestamp without time zone)) AS max FROM query_single_shard_table.non_colocated_events_table e ORDER BY event_type, (SELECT intermediate_result.max FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(max timestamp without time zone)) LIMIT 1
|
|
DEBUG: Creating router plan
|
|
event_type | max
|
|
---------------------------------------------------------------------
|
|
0 | Thu Nov 23 17:30:34.635085 2017
|
|
(1 row)
|
|
|
|
WITH cte_1 AS (SELECT max(time) FROM users_table)
|
|
SELECT event_type, (SELECT * FROM cte_1)
|
|
FROM non_colocated_events_table e
|
|
ORDER BY 1,2 LIMIT 1;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT max("time") AS max FROM query_single_shard_table.users_table
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT event_type, (SELECT cte_1.max FROM (SELECT intermediate_result.max FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(max timestamp without time zone)) cte_1) AS max FROM query_single_shard_table.non_colocated_events_table e ORDER BY event_type, (SELECT cte_1.max FROM (SELECT intermediate_result.max FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(max timestamp without time zone)) cte_1) LIMIT 1
|
|
DEBUG: Creating router plan
|
|
event_type | max
|
|
---------------------------------------------------------------------
|
|
0 | Thu Nov 23 17:30:34.635085 2017
|
|
(1 row)
|
|
|
|
WITH cte_1 AS (SELECT max(time) FROM users_table)
|
|
SELECT event_type, (SELECT * FROM cte_1 LIMIT 1)
|
|
FROM non_colocated_events_table e
|
|
ORDER BY 1,2 LIMIT 1;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT max("time") AS max FROM query_single_shard_table.users_table
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT max FROM (SELECT intermediate_result.max FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(max timestamp without time zone)) cte_1 LIMIT 1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT event_type, (SELECT intermediate_result.max FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(max timestamp without time zone)) AS max FROM query_single_shard_table.non_colocated_events_table e ORDER BY event_type, (SELECT intermediate_result.max FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(max timestamp without time zone)) LIMIT 1
|
|
DEBUG: Creating router plan
|
|
event_type | max
|
|
---------------------------------------------------------------------
|
|
0 | Thu Nov 23 17:30:34.635085 2017
|
|
(1 row)
|
|
|
|
WITH cte_1 AS (SELECT max(time) m FROM users_table)
|
|
SELECT count(*), (SELECT * FROM cte_1 c1 join cte_1 c2 using (m))
|
|
FROM non_colocated_events_table e
|
|
GROUP BY 2
|
|
ORDER BY 1,2 LIMIT 1;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: generating subplan XXX_1 for CTE cte_1: SELECT max("time") AS m FROM query_single_shard_table.users_table
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count, (SELECT c1.m FROM ((SELECT intermediate_result.m FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(m timestamp without time zone)) c1 JOIN (SELECT intermediate_result.m FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(m timestamp without time zone)) c2 USING (m))) AS m FROM query_single_shard_table.non_colocated_events_table e GROUP BY (SELECT c1.m FROM ((SELECT intermediate_result.m FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(m timestamp without time zone)) c1 JOIN (SELECT intermediate_result.m FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(m timestamp without time zone)) c2 USING (m))) ORDER BY (count(*)), (SELECT c1.m FROM ((SELECT intermediate_result.m FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(m timestamp without time zone)) c1 JOIN (SELECT intermediate_result.m FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(m timestamp without time zone)) c2 USING (m))) LIMIT 1
|
|
DEBUG: Creating router plan
|
|
count | m
|
|
---------------------------------------------------------------------
|
|
101 | Thu Nov 23 17:30:34.635085 2017
|
|
(1 row)
|
|
|
|
WITH cte_1 AS (SELECT min(user_id) u, max(time) m FROM users_table)
|
|
SELECT count(*), (SELECT max(time) FROM users_table WHERE user_id = cte_1.u GROUP BY user_id)
|
|
FROM cte_1
|
|
GROUP BY 2
|
|
ORDER BY 1,2 LIMIT 1;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: Creating router plan
|
|
count | max
|
|
---------------------------------------------------------------------
|
|
1 | Thu Nov 23 17:30:34.635085 2017
|
|
(1 row)
|
|
|
|
SELECT sum(e.user_id) + (SELECT max(value_3) FROM users_table WHERE user_id = e.user_id GROUP BY user_id)
|
|
FROM non_colocated_events_table e
|
|
GROUP BY e.user_id
|
|
ORDER BY 1 LIMIT 3;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
ERROR: cannot push down subquery on the target list
|
|
DETAIL: Subqueries in the SELECT part of the query can only be pushed down if they happen before aggregates and window functions
|
|
SELECT e.user_id, sum((SELECT any_value(value_3) FROM users_reference_table WHERE user_id = e.user_id GROUP BY user_id)) OVER (PARTITION BY e.user_id)
|
|
FROM non_colocated_events_table e
|
|
ORDER BY 1, 2 LIMIT 3;
|
|
DEBUG: Creating router plan
|
|
user_id | sum
|
|
---------------------------------------------------------------------
|
|
1 |
|
|
1 |
|
|
1 |
|
|
(3 rows)
|
|
|
|
SELECT (SELECT (SELECT e.user_id + user_id) FROM users_table WHERE user_id = e.user_id GROUP BY user_id)
|
|
FROM non_colocated_events_table e
|
|
GROUP BY 1
|
|
ORDER BY 1 LIMIT 3;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: push down of limit count: 3
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: users_table and non_colocated_events_table are not colocated
|
|
SELECT (SELECT (SELECT e.user_id + user_id) FROM users_reference_table WHERE user_id = e.user_id GROUP BY user_id)
|
|
FROM non_colocated_events_table e
|
|
GROUP BY 1
|
|
ORDER BY 1 LIMIT 3;
|
|
DEBUG: Creating router plan
|
|
?column?
|
|
---------------------------------------------------------------------
|
|
|
|
(1 row)
|
|
|
|
WITH cte_1 AS (SELECT user_id FROM users_table ORDER BY 1 LIMIT 1)
|
|
SELECT (SELECT (SELECT e.user_id + user_id) FROM cte_1 WHERE user_id = e.user_id GROUP BY user_id)
|
|
FROM non_colocated_events_table e
|
|
GROUP BY 1
|
|
ORDER BY 1 LIMIT 3;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM query_single_shard_table.users_table ORDER BY user_id LIMIT 1
|
|
DEBUG: skipping recursive planning for the subquery since it contains references to outer queries
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT (SELECT (SELECT (e.user_id OPERATOR(pg_catalog.+) cte_1.user_id)) FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 WHERE (cte_1.user_id OPERATOR(pg_catalog.=) e.user_id) GROUP BY cte_1.user_id) FROM query_single_shard_table.non_colocated_events_table e GROUP BY (SELECT (SELECT (e.user_id OPERATOR(pg_catalog.+) cte_1.user_id)) FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 WHERE (cte_1.user_id OPERATOR(pg_catalog.=) e.user_id) GROUP BY cte_1.user_id) ORDER BY (SELECT (SELECT (e.user_id OPERATOR(pg_catalog.+) cte_1.user_id)) FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 WHERE (cte_1.user_id OPERATOR(pg_catalog.=) e.user_id) GROUP BY cte_1.user_id) LIMIT 3
|
|
DEBUG: Creating router plan
|
|
?column?
|
|
---------------------------------------------------------------------
|
|
2
|
|
|
|
(2 rows)
|
|
|
|
SELECT (SELECT (SELECT e.user_id + user_id) FROM (SELECT 1 AS user_id) s WHERE user_id = e.user_id GROUP BY user_id)
|
|
FROM non_colocated_events_table e
|
|
GROUP BY 1
|
|
ORDER BY 1 LIMIT 3;
|
|
DEBUG: Creating router plan
|
|
?column?
|
|
---------------------------------------------------------------------
|
|
2
|
|
|
|
(2 rows)
|
|
|
|
CREATE TEMP VIEW view_1 AS (SELECT user_id, value_2 FROM users_table WHERE user_id = 1 AND value_1 = 1 ORDER BY 1,2);
|
|
WARNING: "view view_1" has dependency on unsupported object "schema pg_temp_xxx"
|
|
DETAIL: "view view_1" will be created only locally
|
|
SELECT (SELECT value_2 FROM view_1 WHERE user_id = e.user_id GROUP BY value_2)
|
|
FROM non_colocated_events_table e
|
|
GROUP BY 1
|
|
ORDER BY 1 LIMIT 3;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: push down of limit count: 3
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: users_table and non_colocated_events_table are not colocated
|
|
SELECT
|
|
user_id, count(*)
|
|
FROM
|
|
non_colocated_events_table e1
|
|
GROUP BY user_id
|
|
HAVING
|
|
count(*) > (SELECT count(*) FROM (SELECT
|
|
(SELECT sum(user_id) FROM users_table WHERE user_id = u1.user_id GROUP BY user_id)
|
|
FROM users_table u1
|
|
GROUP BY user_id) as foo) ORDER BY 1 DESC;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT count(*) AS count FROM (SELECT (SELECT sum(users_table.user_id) AS sum FROM query_single_shard_table.users_table WHERE (users_table.user_id OPERATOR(pg_catalog.=) u1.user_id) GROUP BY users_table.user_id) AS sum FROM query_single_shard_table.users_table u1 GROUP BY u1.user_id) foo
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT user_id, count(*) AS count FROM query_single_shard_table.non_colocated_events_table e1 GROUP BY user_id HAVING (count(*) OPERATOR(pg_catalog.>) (SELECT intermediate_result.count FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(count bigint))) ORDER BY user_id DESC
|
|
DEBUG: Creating router plan
|
|
user_id | count
|
|
---------------------------------------------------------------------
|
|
6 | 10
|
|
5 | 14
|
|
4 | 17
|
|
3 | 21
|
|
2 | 24
|
|
1 | 15
|
|
(6 rows)
|
|
|
|
SELECT count(*) FROM (SELECT
|
|
(SELECT user_id FROM users_table WHERE user_id = u1.user_id FOR UPDATE)
|
|
FROM users_table u1
|
|
GROUP BY user_id) as foo;
|
|
DEBUG: Creating router plan
|
|
count
|
|
---------------------------------------------------------------------
|
|
6
|
|
(1 row)
|
|
|
|
-- test single hash repartition join
|
|
SET citus.log_multi_join_order TO ON;
|
|
SET client_min_messages TO DEBUG1;
|
|
SET citus.enable_repartition_joins TO ON;
|
|
SET citus.enable_single_hash_repartition_joins TO ON;
|
|
SELECT count(*) FROM nullkey_c1_t1 JOIN distributed_table USING(a);
|
|
LOG: join order: [ "nullkey_c1_t1" ][ single hash partition join "distributed_table" ]
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
select count(*) from nullkey_c1_t1 JOIN nullkey_c2_t2 USING(a);
|
|
LOG: join order: [ "nullkey_c1_t1" ][ dual partition join "nullkey_c2_t2" ]
|
|
count
|
|
---------------------------------------------------------------------
|
|
0
|
|
(1 row)
|
|
|
|
RESET citus.log_multi_join_order;
|
|
SET client_min_messages TO DEBUG2;
|
|
RESET citus.enable_repartition_joins;
|
|
RESET citus.enable_single_hash_repartition_joins;
|
|
SET client_min_messages TO DEBUG1;
|
|
SET citus.enable_repartition_joins TO ON;
|
|
SET citus.log_multi_join_order TO ON;
|
|
SELECT count(*), avg(avgsub.a)
|
|
FROM (
|
|
SELECT table_0.a
|
|
FROM reference_table AS table_0
|
|
INNER JOIN nullkey_c1_t1 AS table_1 USING (a)
|
|
INNER JOIN reference_table AS table_2 USING (a)
|
|
INNER JOIN nullkey_c2_t1 AS table_3 USING (a)
|
|
ORDER BY a LIMIT 7
|
|
) AS avgsub;
|
|
LOG: join order: [ "nullkey_c1_t1" ][ reference join "reference_table" ][ reference join "reference_table" ][ dual partition join "nullkey_c2_t1" ]
|
|
DEBUG: push down of limit count: 7
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT table_0.a FROM (((query_single_shard_table.reference_table table_0 JOIN query_single_shard_table.nullkey_c1_t1 table_1 USING (a)) JOIN query_single_shard_table.reference_table table_2 USING (a)) JOIN query_single_shard_table.nullkey_c2_t1 table_3 USING (a)) ORDER BY table_0.a LIMIT 7
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count, avg(a) AS avg FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) avgsub
|
|
count | avg
|
|
---------------------------------------------------------------------
|
|
0 |
|
|
(1 row)
|
|
|
|
SET citus.enable_single_hash_repartition_joins TO ON;
|
|
-- We prefer dual-hash repartition join over single-hash repartition join
|
|
-- even if citus.enable_single_hash_repartition_joins is set to ON. This
|
|
-- happens because single shard tables don't have a shard key.
|
|
SELECT count(*), avg(avgsub.a)
|
|
FROM (
|
|
SELECT table_0.a
|
|
FROM reference_table AS table_0
|
|
INNER JOIN nullkey_c1_t1 AS table_1 USING (a)
|
|
INNER JOIN reference_table AS table_2 USING (a)
|
|
INNER JOIN nullkey_c2_t1 AS table_3 USING (a)
|
|
ORDER BY a LIMIT 7
|
|
) AS avgsub;
|
|
LOG: join order: [ "nullkey_c1_t1" ][ reference join "reference_table" ][ reference join "reference_table" ][ dual partition join "nullkey_c2_t1" ]
|
|
DEBUG: push down of limit count: 7
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT table_0.a FROM (((query_single_shard_table.reference_table table_0 JOIN query_single_shard_table.nullkey_c1_t1 table_1 USING (a)) JOIN query_single_shard_table.reference_table table_2 USING (a)) JOIN query_single_shard_table.nullkey_c2_t1 table_3 USING (a)) ORDER BY table_0.a LIMIT 7
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count, avg(a) AS avg FROM (SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) avgsub
|
|
count | avg
|
|
---------------------------------------------------------------------
|
|
0 |
|
|
(1 row)
|
|
|
|
RESET citus.enable_single_hash_repartition_joins;
|
|
SET client_min_messages TO DEBUG2;
|
|
RESET citus.enable_repartition_joins;
|
|
RESET citus.log_multi_join_order;
|
|
SELECT count(*), avg(avgsub.a)
|
|
FROM (
|
|
SELECT table_0.a
|
|
FROM nullkey_c1_t1 AS table_0
|
|
RIGHT JOIN (
|
|
SELECT table_2.a FROM (
|
|
SELECT table_3.a FROM nullkey_c2_t1 AS table_3
|
|
ORDER BY a LIMIT 0
|
|
) AS table_2
|
|
INNER JOIN nullkey_c2_t1 AS table_4 USING (a)
|
|
WHERE table_4.a < 8
|
|
) AS table_1 USING (a)
|
|
) AS avgsub;
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT a FROM query_single_shard_table.nullkey_c2_t1 table_3 ORDER BY a LIMIT 0
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count, avg(a) AS avg FROM (SELECT table_0.a FROM (query_single_shard_table.nullkey_c1_t1 table_0 RIGHT JOIN (SELECT table_2.a FROM ((SELECT intermediate_result.a FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(a integer)) table_2 JOIN query_single_shard_table.nullkey_c2_t1 table_4 USING (a)) WHERE (table_4.a OPERATOR(pg_catalog.<) 8)) table_1 USING (a))) avgsub
|
|
DEBUG: router planner does not support queries that reference non-colocated distributed tables
|
|
ERROR: cannot perform a lateral outer join when a distributed subquery references complex subqueries, CTEs or local tables
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-- test nested exec
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CREATE FUNCTION dist_query_single_shard(p_key int)
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RETURNS bigint
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LANGUAGE plpgsql AS $$
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DECLARE
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result bigint;
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BEGIN
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SELECT count(*) INTO result FROM query_single_shard_table.nullkey_c1_t1 WHERE a = p_key;
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RETURN result;
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END;
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$$;
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DEBUG: switching to sequential query execution mode
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DETAIL: A command for a distributed function is run. To make sure subsequent commands see the function correctly we need to make sure to use only one connection for all future commands
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CREATE FUNCTION ref_query()
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RETURNS bigint
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LANGUAGE plpgsql AS $$
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DECLARE
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|
result bigint;
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BEGIN
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SELECT count(*) INTO result FROM query_single_shard_table.reference_table;
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RETURN result;
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END;
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$$;
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DEBUG: switching to sequential query execution mode
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|
DETAIL: A command for a distributed function is run. To make sure subsequent commands see the function correctly we need to make sure to use only one connection for all future commands
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SELECT dist_query_single_shard(count(*)::int) FROM nullkey_c1_t1;
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DEBUG: Distributed planning for a fast-path router query
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|
DEBUG: Creating router plan
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|
ERROR: cannot execute a distributed query from a query on a shard
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|
DETAIL: Executing a distributed query in a function call that may be pushed to a remote node can lead to incorrect results.
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|
HINT: Avoid nesting of distributed queries or use alter user current_user set citus.allow_nested_distributed_execution to on to allow it with possible incorrectness.
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CONTEXT: SQL statement "SELECT count(*) FROM query_single_shard_table.nullkey_c1_t1 WHERE a = p_key"
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PL/pgSQL function query_single_shard_table.dist_query_single_shard(integer) line XX at SQL statement
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|
while executing command on localhost:xxxxx
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SELECT ref_query()+count(*) FROM nullkey_c1_t1;
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|
DEBUG: Distributed planning for a fast-path router query
|
|
DEBUG: Creating router plan
|
|
ERROR: cannot execute a distributed query from a query on a shard
|
|
DETAIL: Executing a distributed query in a function call that may be pushed to a remote node can lead to incorrect results.
|
|
HINT: Avoid nesting of distributed queries or use alter user current_user set citus.allow_nested_distributed_execution to on to allow it with possible incorrectness.
|
|
CONTEXT: SQL statement "SELECT count(*) FROM query_single_shard_table.reference_table"
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|
PL/pgSQL function query_single_shard_table.ref_query() line XX at SQL statement
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|
while executing command on localhost:xxxxx
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|
SET client_min_messages TO ERROR;
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|
DROP SCHEMA query_single_shard_table CASCADE;
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