mirror of https://github.com/citusdata/citus.git
76 lines
2.6 KiB
PL/PgSQL
76 lines
2.6 KiB
PL/PgSQL
--
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-- MULTI_MX_INSERT_SELECT_REPARTITION
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--
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-- Test behaviour of repartitioned INSERT ... SELECT in MX setup
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--
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-- This test file has an alternative output because of the change in the
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-- display of SQL-standard function's arguments in INSERT/SELECT in PG15.
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-- The alternative output can be deleted when we drop support for PG14
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--
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SHOW server_version \gset
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SELECT substring(:'server_version', '\d+')::int >= 15 AS server_version_ge_15;
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CREATE SCHEMA multi_mx_insert_select_repartition;
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SET search_path TO multi_mx_insert_select_repartition;
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SET citus.next_shard_id TO 4213581;
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SET citus.shard_replication_factor TO 1;
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SET citus.shard_count TO 4;
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CREATE TABLE source_table(a int, b int);
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SELECT create_distributed_table('source_table', 'a');
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INSERT INTO source_table SELECT floor(i/4), i*i FROM generate_series(1, 20) i;
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SET citus.shard_count TO 3;
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CREATE TABLE target_table(a int, b int);
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SELECT create_distributed_table('target_table', 'a');
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CREATE FUNCTION square(int) RETURNS INT
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AS $$ SELECT $1 * $1 $$
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LANGUAGE SQL;
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select create_distributed_function('square(int)');
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select public.colocate_proc_with_table('square', 'source_table'::regclass, 0);
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-- Test along with function delegation
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-- function delegation only happens for "SELECT f()", and we don't use
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-- repartitioned INSERT/SELECT when task count is 1, so the following
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-- should go via coordinator
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EXPLAIN (costs off) INSERT INTO target_table(a) SELECT square(4);
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INSERT INTO target_table(a) SELECT square(4);
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SELECT * FROM target_table;
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TRUNCATE target_table;
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--
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-- Test repartitioned INSERT/SELECT from MX worker
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--
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\c - - - :worker_1_port
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SET search_path TO multi_mx_insert_select_repartition;
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EXPLAIN (costs off) INSERT INTO target_table SELECT a, max(b) FROM source_table GROUP BY a;
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INSERT INTO target_table SELECT a, max(b) FROM source_table GROUP BY a;
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SET citus.log_local_commands to on;
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-- INSERT .. SELECT via repartitioning with local execution
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BEGIN;
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select count(*) from source_table WHERE a = 1;
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-- we omit the "SELECT bytes FROM fetch_intermediate_results..." line since it is flaky
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SET LOCAL citus.grep_remote_commands TO '%multi_mx_insert_select_repartition%';
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insert into target_table SELECT a*2 FROM source_table RETURNING a;
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ROLLBACK;
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BEGIN;
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select count(*) from source_table WHERE a = 1;
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insert into target_table SELECT a FROM source_table LIMIT 10;
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ROLLBACK;
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\c - - - :master_port
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SET search_path TO multi_mx_insert_select_repartition;
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SELECT * FROM target_table ORDER BY a;
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RESET client_min_messages;
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\set VERBOSITY terse
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DROP SCHEMA multi_mx_insert_select_repartition CASCADE;
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