CREATE SCHEMA query_single_shard_table;
SET search_path TO query_single_shard_table;
SET citus.next_shard_id TO 1620000;
SET citus.shard_count TO 32;
SET client_min_messages TO WARNING;
SELECT 1 FROM citus_add_node('localhost', :master_port, groupid => 0);
 ?column?
---------------------------------------------------------------------
        1
(1 row)

SET client_min_messages TO NOTICE;
CREATE TABLE nullkey_c1_t1(a int, b int);
CREATE TABLE nullkey_c1_t2(a int, b int);
SELECT create_distributed_table('nullkey_c1_t1', null, colocate_with=>'none');
 create_distributed_table
---------------------------------------------------------------------

(1 row)

SELECT create_distributed_table('nullkey_c1_t2', null, colocate_with=>'nullkey_c1_t1');
 create_distributed_table
---------------------------------------------------------------------

(1 row)

INSERT INTO nullkey_c1_t1 SELECT i, i FROM generate_series(1, 8) i;
INSERT INTO nullkey_c1_t2 SELECT i, i FROM generate_series(2, 7) i;
CREATE TABLE nullkey_c2_t1(a int, b int);
CREATE TABLE nullkey_c2_t2(a int, b int);
SELECT create_distributed_table('nullkey_c2_t1', null, colocate_with=>'none');
 create_distributed_table
---------------------------------------------------------------------

(1 row)

SELECT create_distributed_table('nullkey_c2_t2', null, colocate_with=>'nullkey_c2_t1', distribution_type=>null);
 create_distributed_table
---------------------------------------------------------------------

(1 row)

INSERT INTO nullkey_c2_t1 SELECT i, i FROM generate_series(2, 7) i;
INSERT INTO nullkey_c2_t2 SELECT i, i FROM generate_series(1, 8) i;
CREATE TABLE nullkey_c3_t1(a int, b int);
SELECT create_distributed_table('nullkey_c3_t1', null, colocate_with=>'none');
 create_distributed_table
---------------------------------------------------------------------

(1 row)

INSERT INTO nullkey_c3_t1 SELECT i, i FROM generate_series(1, 8) i;
CREATE TABLE reference_table(a int, b int);
SELECT create_reference_table('reference_table');
 create_reference_table
---------------------------------------------------------------------

(1 row)

INSERT INTO reference_table SELECT i, i FROM generate_series(0, 5) i;
CREATE TABLE distributed_table(a int, b int);
SELECT create_distributed_table('distributed_table', 'a');
 create_distributed_table
---------------------------------------------------------------------

(1 row)

INSERT INTO distributed_table SELECT i, i FROM generate_series(3, 8) i;
CREATE TABLE citus_local_table(a int, b int);
SELECT citus_add_local_table_to_metadata('citus_local_table');
 citus_add_local_table_to_metadata
---------------------------------------------------------------------

(1 row)

INSERT INTO citus_local_table SELECT i, i FROM generate_series(0, 10) i;
CREATE TABLE postgres_local_table(a int, b int);
INSERT INTO postgres_local_table SELECT i, i FROM generate_series(5, 10) i;
CREATE TABLE articles_hash (
	id bigint NOT NULL,
	author_id bigint NOT NULL,
	title varchar(20) NOT NULL,
	word_count integer
);
INSERT INTO articles_hash VALUES ( 4,  4, 'altdorfer', 14551),( 5,  5, 'aruru', 11389),
								 (13,  3, 'aseyev', 2255),(15,  5, 'adversa', 3164),
								 (18,  8, 'assembly', 911),(19,  9, 'aubergiste', 4981),
								 (28,  8, 'aerophyte', 5454),(29,  9, 'amateur', 9524),
								 (42,  2, 'ausable', 15885),(43,  3, 'affixal', 12723),
								 (49,  9, 'anyone', 2681),(50, 10, 'anjanette', 19519);
SELECT create_distributed_table('articles_hash', null, colocate_with=>'none');
NOTICE:  Copying data from local table...
NOTICE:  copying the data has completed
DETAIL:  The local data in the table is no longer visible, but is still on disk.
HINT:  To remove the local data, run: SELECT truncate_local_data_after_distributing_table($$query_single_shard_table.articles_hash$$)
 create_distributed_table
---------------------------------------------------------------------

(1 row)

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));
SELECT create_distributed_table('raw_events_first', null, colocate_with=>'none', distribution_type=>null);
 create_distributed_table
---------------------------------------------------------------------

(1 row)

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));
SELECT create_distributed_table('raw_events_second', null, colocate_with=>'raw_events_first', distribution_type=>null);
 create_distributed_table
---------------------------------------------------------------------

(1 row)

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));
SELECT create_distributed_table('agg_events', null, colocate_with=>'raw_events_first', distribution_type=>null);
 create_distributed_table
---------------------------------------------------------------------

(1 row)

CREATE TABLE users_ref_table (user_id int);
SELECT create_reference_table('users_ref_table');
 create_reference_table
---------------------------------------------------------------------

(1 row)

INSERT INTO raw_events_first VALUES (1, '1970-01-01', 10, 100, 1000.1, 10000), (3, '1971-01-01', 30, 300, 3000.1, 30000),
                                    (5, '1972-01-01', 50, 500, 5000.1, 50000), (2, '1973-01-01', 20, 200, 2000.1, 20000),
                                    (4, '1974-01-01', 40, 400, 4000.1, 40000), (6, '1975-01-01', 60, 600, 6000.1, 60000);
CREATE TABLE modify_fast_path(key int, value_1 int, value_2 text);
SELECT create_distributed_table('modify_fast_path', null);
 create_distributed_table
---------------------------------------------------------------------

(1 row)

CREATE TABLE modify_fast_path_reference(key int, value_1 int, value_2 text);
SELECT create_reference_table('modify_fast_path_reference');
 create_reference_table
---------------------------------------------------------------------

(1 row)

CREATE TABLE bigserial_test (x int, y int, z bigserial);
SELECT create_distributed_table('bigserial_test', null);
 create_distributed_table
---------------------------------------------------------------------

(1 row)

CREATE TABLE append_table (text_col text, a int);
SELECT create_distributed_table('append_table', 'a', 'append');
 create_distributed_table
---------------------------------------------------------------------

(1 row)

SELECT master_create_empty_shard('append_table') AS shardid1 \gset
SELECT master_create_empty_shard('append_table') AS shardid2 \gset
SELECT master_create_empty_shard('append_table') AS shardid3 \gset
COPY append_table (text_col, a) FROM STDIN WITH (format 'csv', append_to_shard :shardid1);
COPY append_table (text_col, a) FROM STDIN WITH (format 'csv', append_to_shard :shardid2);
CREATE TABLE range_table(a int, b int);
SELECT create_distributed_table('range_table', 'a', 'range');
 create_distributed_table
---------------------------------------------------------------------

(1 row)

CALL public.create_range_partitioned_shards('range_table', '{"0","25"}','{"24","49"}');
INSERT INTO range_table VALUES (0, 1), (1, 2), (2, 3), (3, 4), (4, 5), (5, 6), (6, 50);
SET client_min_messages to DEBUG2;
-- simple insert
INSERT INTO nullkey_c1_t1 VALUES (1,2), (2,2), (3,4);
DEBUG:  Creating router plan
INSERT INTO nullkey_c1_t2 VALUES (1,3), (3,4), (5,1), (6,2);
DEBUG:  Creating router plan
INSERT INTO nullkey_c2_t1 VALUES (1,0), (2,5), (4,3), (5,2);
DEBUG:  Creating router plan
INSERT INTO nullkey_c2_t2 VALUES (2,4), (3,2), (5,2), (7,4);
DEBUG:  Creating router plan
-- simple select
SELECT * FROM nullkey_c1_t1 ORDER BY 1,2;
DEBUG:  Distributed planning for a fast-path router query
DEBUG:  Creating router plan
 a | b
---------------------------------------------------------------------
 1 | 1
 1 | 2
 2 | 2
 2 | 2
 3 | 3
 3 | 4
 4 | 4
 5 | 5
 6 | 6
 7 | 7
 8 | 8
(11 rows)

-- for update / share
SELECT * FROM modify_fast_path WHERE key = 1 FOR UPDATE;
DEBUG:  Distributed planning for a fast-path router query
DEBUG:  Creating router plan
 key | value_1 | value_2
---------------------------------------------------------------------
(0 rows)

SELECT * FROM modify_fast_path WHERE key = 1 FOR SHARE;
DEBUG:  Distributed planning for a fast-path router query
DEBUG:  Creating router plan
 key | value_1 | value_2
---------------------------------------------------------------------
(0 rows)

SELECT * FROM modify_fast_path FOR UPDATE;
DEBUG:  Distributed planning for a fast-path router query
DEBUG:  Creating router plan
 key | value_1 | value_2
---------------------------------------------------------------------
(0 rows)

SELECT * FROM modify_fast_path FOR SHARE;
DEBUG:  Distributed planning for a fast-path router query
DEBUG:  Creating router plan
 key | value_1 | value_2
---------------------------------------------------------------------
(0 rows)

-- cartesian product with different table types
--    with other table types
SELECT COUNT(*) FROM distributed_table d1, nullkey_c1_t1;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM reference_table d1, nullkey_c1_t1;
DEBUG:  Creating router plan
 count
---------------------------------------------------------------------
    66
(1 row)

SELECT COUNT(*) FROM citus_local_table d1, nullkey_c1_t1;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM postgres_local_table d1, nullkey_c1_t1;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
--    with a colocated single-shard table
SELECT COUNT(*) FROM nullkey_c1_t1 d1, nullkey_c1_t2;
DEBUG:  Creating router plan
 count
---------------------------------------------------------------------
   110
(1 row)

--    with a non-colocated single-shard table
SELECT COUNT(*) FROM nullkey_c1_t1 d1, nullkey_c2_t1;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
-- First, show that nullkey_c1_t1 and nullkey_c3_t1 are not colocated.
SELECT
  (SELECT colocationid FROM pg_dist_partition WHERE logicalrelid = 'query_single_shard_table.nullkey_c1_t1'::regclass) !=
  (SELECT colocationid FROM pg_dist_partition WHERE logicalrelid = 'query_single_shard_table.nullkey_c3_t1'::regclass);
 ?column?
---------------------------------------------------------------------
 t
(1 row)

-- Now verify that we can join them via router planner because it doesn't care
-- about whether two tables are colocated or not but physical location of shards
-- when citus.enable_non_colocated_router_query_pushdown is set to on.
SET citus.enable_non_colocated_router_query_pushdown TO ON;
SELECT COUNT(*) FROM nullkey_c1_t1 JOIN nullkey_c3_t1 USING(a);
DEBUG:  Creating router plan
 count
---------------------------------------------------------------------
    11
(1 row)

SET citus.enable_non_colocated_router_query_pushdown TO OFF;
SELECT COUNT(*) FROM nullkey_c1_t1 JOIN nullkey_c3_t1 USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
RESET citus.enable_non_colocated_router_query_pushdown;
-- colocated join between single-shard tables
SELECT COUNT(*) FROM nullkey_c1_t1 JOIN nullkey_c1_t2 USING(a);
DEBUG:  Creating router plan
 count
---------------------------------------------------------------------
    14
(1 row)

SELECT COUNT(*) FROM nullkey_c1_t1 LEFT JOIN nullkey_c1_t2 USING(a);
DEBUG:  Creating router plan
 count
---------------------------------------------------------------------
    15
(1 row)

SELECT COUNT(*) FROM nullkey_c1_t1 FULL JOIN nullkey_c1_t2 USING(a);
DEBUG:  Creating router plan
 count
---------------------------------------------------------------------
    15
(1 row)

SELECT COUNT(*) FROM nullkey_c1_t1 t1
LEFT JOIN LATERAL (
    SELECT * FROM nullkey_c1_t2 t2 WHERE t2.b > t1.a
) q USING(a);
DEBUG:  Creating router plan
 count
---------------------------------------------------------------------
    11
(1 row)

SELECT COUNT(*) FROM nullkey_c1_t1 t1
JOIN LATERAL (
    SELECT * FROM nullkey_c1_t2 t2 WHERE t2.b > t1.a
) q USING(a);
DEBUG:  Creating router plan
 count
---------------------------------------------------------------------
     4
(1 row)

SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE EXISTS (
    SELECT * FROM nullkey_c1_t2 t2 WHERE t2.b > t1.a
);
DEBUG:  Creating router plan
 count
---------------------------------------------------------------------
     9
(1 row)

SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE t1.b IN (
    SELECT b+1 FROM nullkey_c1_t2 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 nullkey_c1_t2 t2 WHERE t2.b > t1.a
);
DEBUG:  Creating router plan
 count
---------------------------------------------------------------------
     7
(1 row)

-- non-colocated inner joins between single-shard tables
SELECT * FROM nullkey_c1_t1 JOIN nullkey_c2_t1 USING(a) ORDER BY 1,2,3;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM nullkey_c1_t1 t1
JOIN LATERAL (
    SELECT * FROM nullkey_c2_t2 t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
-- 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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT * FROM nullkey_c1_t1 FULL JOIN nullkey_c2_t2 USING(a) ORDER BY 1,2,3 LIMIT 4;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM nullkey_c1_t1 t1
LEFT JOIN LATERAL (
    SELECT * FROM nullkey_c2_t2 t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE EXISTS (
    SELECT * FROM nullkey_c2_t2 t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE t1.b IN (
    SELECT b+1 FROM nullkey_c2_t2 t2 WHERE t2.b = t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE t1.b NOT IN (
    SELECT a FROM nullkey_c2_t2 t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
-- 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);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT * FROM nullkey_c1_t1 JOIN citus_local_table USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
-- join with a distributed table
SELECT * FROM distributed_table d1 JOIN nullkey_c1_t1 USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM nullkey_c1_t1 t1
JOIN LATERAL (
    SELECT * FROM distributed_table t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM distributed_table t1
JOIN LATERAL (
    SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
-- 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);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM citus_local_table LEFT JOIN nullkey_c1_t1 USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM nullkey_c1_t1 LEFT JOIN postgres_local_table USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM postgres_local_table LEFT JOIN nullkey_c1_t1 USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM nullkey_c1_t1 FULL JOIN citus_local_table USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM nullkey_c1_t1 FULL JOIN postgres_local_table USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM nullkey_c1_t1 FULL JOIN reference_table USING(a);
DEBUG:  Creating router plan
 count
---------------------------------------------------------------------
    12
(1 row)

SELECT COUNT(*) FROM nullkey_c1_t1 JOIN append_table USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Router planner does not support append-partitioned tables.
SELECT COUNT(*) FROM nullkey_c1_t1 JOIN range_table USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
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;
SELECT COUNT(*) FROM nullkey_c1_t1 JOIN range_table USING(a) WHERE range_table.a = 20;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
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);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE EXISTS (
    SELECT * FROM distributed_table t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE NOT EXISTS (
    SELECT * FROM distributed_table t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE t1.b IN (
    SELECT b+1 FROM distributed_table t2 WHERE t2.b = t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Router planner cannot handle multi-shard select queries
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE t1.b NOT IN (
    SELECT a FROM distributed_table t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Router planner cannot handle multi-shard select queries
SELECT COUNT(*) FROM distributed_table t1
LEFT JOIN LATERAL (
    SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM distributed_table t1
WHERE EXISTS (
    SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
SELECT COUNT(*) FROM distributed_table t1
WHERE t1.b IN (
    SELECT b+1 FROM nullkey_c1_t1 t2 WHERE t2.b = t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Router planner cannot handle multi-shard select queries
SELECT COUNT(*) FROM distributed_table t1
WHERE t1.b NOT IN (
    SELECT a FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Router planner cannot handle multi-shard select queries
--    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);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE EXISTS (
    SELECT * FROM citus_local_table t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE NOT EXISTS (
    SELECT * FROM citus_local_table t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE t1.b IN (
    SELECT b+1 FROM citus_local_table t2 WHERE t2.b = t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE t1.b NOT IN (
    SELECT a FROM citus_local_table t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
SELECT COUNT(*) FROM nullkey_c1_t1 t1
JOIN LATERAL (
    SELECT * FROM citus_local_table t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM citus_local_table t1
LEFT JOIN LATERAL (
    SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM postgres_local_table t1
LEFT JOIN LATERAL (
    SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM citus_local_table t1
WHERE EXISTS (
    SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM citus_local_table t1
WHERE t1.b IN (
    SELECT b+1 FROM nullkey_c1_t1 t2 WHERE t2.b = t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
SELECT COUNT(*) FROM citus_local_table t1
WHERE t1.b NOT IN (
    SELECT a FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
SELECT COUNT(*) FROM citus_local_table t1
JOIN LATERAL (
    SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM nullkey_c1_t1 t1
LEFT JOIN LATERAL (
    SELECT * FROM postgres_local_table t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE EXISTS (
    SELECT * FROM postgres_local_table t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE NOT EXISTS (
    SELECT * FROM postgres_local_table t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE t1.b IN (
    SELECT b+1 FROM postgres_local_table t2 WHERE t2.b = t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
SELECT COUNT(*) FROM nullkey_c1_t1 t1
WHERE t1.b NOT IN (
    SELECT a FROM postgres_local_table t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
SELECT COUNT(*) FROM nullkey_c1_t1 t1
JOIN LATERAL (
    SELECT * FROM postgres_local_table t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM postgres_local_table t1
WHERE EXISTS (
    SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
SELECT COUNT(*) FROM postgres_local_table t1
WHERE t1.b IN (
    SELECT b+1 FROM nullkey_c1_t1 t2 WHERE t2.b = t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
SELECT COUNT(*) FROM postgres_local_table t1
WHERE t1.b NOT IN (
    SELECT a FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
SELECT COUNT(*) FROM postgres_local_table t1
JOIN LATERAL (
    SELECT * FROM nullkey_c1_t1 t2 WHERE t2.b > t1.a
) q USING(a);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
-- 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:  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:  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:  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:  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:  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:  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
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Local tables cannot be used in distributed queries.
-- 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
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
-- 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 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
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  Sequences cannot be used in router queries
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;
DEBUG:  cannot perform a lateral outer join when a distributed subquery references a reference table
DEBUG:  Collecting INSERT ... SELECT results on coordinator
-- 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);
DEBUG:  correlated subqueries are not supported when the FROM clause contains a reference table
DEBUG:  Collecting INSERT ... SELECT results on coordinator
-- 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);
-- We could relax distributed insert .. select checks to allow pushing
-- down more clauses down to the worker nodes when inserting into a single
-- shard by selecting from a colocated one. We might want to do something
-- like https://github.com/citusdata/citus/pull/6772.
--
--  e.g., insert into null_shard_key_1/citus_local/reference
--        select * from null_shard_key_1/citus_local/reference limit 1
--
-- Below "limit / offset clause" test and some others are examples of this.
-- limit / offset clause
INSERT INTO agg_events (user_id) SELECT raw_events_first.user_id FROM raw_events_first LIMIT 1;
DEBUG:  cannot push down this subquery
DETAIL:  Limit clause is currently unsupported when a subquery references a column from another query
DEBUG:  Collecting INSERT ... SELECT results on coordinator
INSERT INTO agg_events (user_id) SELECT raw_events_first.user_id FROM raw_events_first OFFSET 1;
DEBUG:  cannot push down this subquery
DETAIL:  Offset clause is currently unsupported when a subquery references a column from another query
DEBUG:  Collecting INSERT ... SELECT results on coordinator
INSERT INTO agg_events (user_id) SELECT users_ref_table.user_id FROM users_ref_table LIMIT 1;
DEBUG:  cannot push down this subquery
DETAIL:  Limit clause is currently unsupported when a subquery references a column from another query
DEBUG:  Collecting INSERT ... SELECT results on coordinator
-- 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;
DEBUG:  cannot push down this subquery
DETAIL:  CTEs in subqueries are currently unsupported
DEBUG:  Collecting INSERT ... SELECT results on coordinator
INSERT INTO raw_events_second (user_id)
  WITH cte AS MATERIALIZED (SELECT * FROM users_ref_table)
  SELECT user_id FROM cte;
DEBUG:  cannot push down this subquery
DETAIL:  CTEs in subqueries are currently unsupported
DEBUG:  Collecting INSERT ... SELECT results on coordinator
-- 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);
DEBUG:  cannot push down this subquery
DETAIL:  Intersect and Except are currently unsupported
DEBUG:  Collecting INSERT ... SELECT results on coordinator
INSERT INTO
  raw_events_first(user_id)
  (SELECT user_id FROM users_ref_table) INTERSECT
  (SELECT user_id FROM raw_events_first);
DEBUG:  cannot push down this subquery
DETAIL:  Intersect and Except are currently unsupported
DEBUG:  Collecting INSERT ... SELECT results on coordinator
-- 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:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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();
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  functions used in UPDATE queries on distributed tables must not be VOLATILE
UPDATE nullkey_c1_t1 SET a = 1 WHERE a = random();
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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();
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  local table citus_local_table cannot be joined with these distributed tables
UPDATE nullkey_c1_t1 SET b = 5 FROM postgres_local_table WHERE nullkey_c1_t1.b = postgres_local_table.b;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  relation postgres_local_table is not distributed
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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  local table citus_local_table cannot be joined with these distributed tables
UPDATE postgres_local_table SET b = 5 FROM nullkey_c1_t1 WHERE nullkey_c1_t1.b = postgres_local_table.b;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  relation postgres_local_table is not distributed
-- 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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  found no worker with all shard placements
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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  local table citus_local_table cannot be joined with these distributed tables
DELETE FROM nullkey_c1_t1 USING postgres_local_table WHERE nullkey_c1_t1.b = postgres_local_table.b;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  relation postgres_local_table is not distributed
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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  local table citus_local_table cannot be joined with these distributed tables
DELETE FROM postgres_local_table USING nullkey_c1_t1 WHERE nullkey_c1_t1.b = postgres_local_table.b;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  relation postgres_local_table is not distributed
-- slightly more complex update queries
UPDATE nullkey_c1_t1 SET b = 5 WHERE nullkey_c1_t1.b IN (SELECT b FROM distributed_table);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
WITH cte AS materialized(
    SELECT * FROM distributed_table
)
UPDATE nullkey_c1_t1 SET b = 5 FROM cte WHERE nullkey_c1_t1.b = cte.a;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
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);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  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 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);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
WITH cte AS materialized(
    SELECT * FROM distributed_table
)
DELETE FROM nullkey_c1_t1 USING cte WHERE nullkey_c1_t1.b = cte.a;
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
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);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  complex joins are only supported when all distributed tables are co-located and joined on their distribution columns
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);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  cannot router plan modification of a non-distributed table
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);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
WITH cte AS (
    DELETE FROM nullkey_c1_t1 WHERE a = 1 RETURNING *
)
SELECT * FROM distributed_table WHERE a IN (SELECT a FROM cte);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
-- 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);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
WITH cte AS (
    DELETE FROM distributed_table WHERE a = 1 RETURNING *
)
SELECT * FROM nullkey_c1_t1 WHERE b IN (SELECT b FROM cte);
ERROR:  queries that reference a distributed table without a shard key can only reference colocated distributed tables or reference tables
DETAIL:  router planner does not support queries that reference non-colocated distributed tables
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)

SET client_min_messages TO ERROR;
DROP SCHEMA query_single_shard_table CASCADE;
SELECT citus_remove_node('localhost', :master_port);
 citus_remove_node
---------------------------------------------------------------------

(1 row)