mirror of https://github.com/citusdata/citus.git
434 lines
26 KiB
Plaintext
434 lines
26 KiB
Plaintext
-- ===================================================================
|
|
-- test recursive planning functionality with Set Operations and CTEs
|
|
-- ===================================================================
|
|
SET client_min_messages TO DEBUG1;
|
|
-- use ctes inside unions on the top level
|
|
WITH
|
|
cte_1 AS (SELECT user_id FROM users_table),
|
|
cte_2 AS (SELECT user_id FROM events_table)
|
|
(SELECT * FROM cte_1) UNION (SELECT * FROM cte_2)
|
|
ORDER BY 1 DESC;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_2 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT user_id FROM (SELECT events_table.user_id FROM public.events_table) cte_2
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) UNION SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) ORDER BY 1 DESC
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
6
|
|
5
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(6 rows)
|
|
|
|
-- use ctes inside unions in a subquery
|
|
WITH
|
|
cte_1 AS (SELECT user_id FROM users_table),
|
|
cte_2 AS (SELECT user_id FROM events_table)
|
|
SELECT
|
|
count(*)
|
|
FROM (
|
|
(SELECT * FROM cte_1) UNION (SELECT * FROM cte_2)
|
|
) as foo;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_2 is going to be inlined via distributed planning
|
|
count
|
|
---------------------------------------------------------------------
|
|
6
|
|
(1 row)
|
|
|
|
-- cte with unions of other ctes
|
|
WITH
|
|
cte_1 AS (SELECT user_id FROM users_table),
|
|
cte_2 AS (SELECT user_id FROM events_table),
|
|
cte_3 AS ((SELECT * FROM cte_1) UNION (SELECT * FROM cte_2))
|
|
SELECT * FROM cte_3 ORDER BY 1 DESC;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_2 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_3 is going to be inlined via distributed planning
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
6
|
|
5
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(6 rows)
|
|
|
|
-- cte with unions of distributed table
|
|
WITH
|
|
cte_1 AS ((SELECT user_id FROM users_table) UNION (SELECT user_id FROM users_table))
|
|
SELECT * FROM cte_1 ORDER BY 1 DESC;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
6
|
|
5
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(6 rows)
|
|
|
|
-- cte with unions of tables is intersected with another query
|
|
WITH
|
|
cte_1 AS ((SELECT user_id FROM users_table) UNION (SELECT user_id FROM users_table))
|
|
(SELECT * FROM cte_1) INTERSECT (SELECT user_id FROM users_table) ORDER BY 1 DESC;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table UNION SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT user_id FROM public.users_table
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) ORDER BY 1 DESC
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
6
|
|
5
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(6 rows)
|
|
|
|
-- cte with unions of tables is intersected with another query that involves except
|
|
WITH
|
|
cte_1 AS ((SELECT user_id FROM users_table) UNION (SELECT user_id FROM users_table))
|
|
(SELECT * FROM cte_1)
|
|
INTERSECT
|
|
((SELECT user_id FROM events_table WHERE user_id < 3) EXCEPT (SELECT user_id FROM users_table WHERE user_id > 4)) ORDER BY 1 DESC;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table UNION SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT user_id FROM public.events_table WHERE (user_id OPERATOR(pg_catalog.<) 3)
|
|
DEBUG: generating subplan XXX_3 for subquery SELECT user_id FROM public.users_table WHERE (user_id OPERATOR(pg_catalog.>) 4)
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) EXCEPT SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_3'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) ORDER BY 1 DESC
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
2
|
|
1
|
|
(2 rows)
|
|
|
|
-- CTE inside a top level EXCEPT
|
|
(WITH cte_1 AS (SELECT user_id FROM events_table WHERE user_id < 3) SELECT * FROM cte_1) INTERSECT (SELECT user_id FROM users_table) ORDER BY 1;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM (SELECT events_table.user_id FROM public.events_table WHERE (events_table.user_id OPERATOR(pg_catalog.<) 3)) cte_1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT user_id FROM public.users_table
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) ORDER BY 1
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
1
|
|
2
|
|
(2 rows)
|
|
|
|
-- INTERSECT inside a CTE, which is inside a subquery
|
|
SELECT
|
|
DISTINCT users_table.user_id
|
|
FROM
|
|
users_table,
|
|
(WITH cte_1 AS (SELECT user_id FROM events_table WHERE user_id < 3 INTERSECT
|
|
SELECT user_id FROM events_table WHERE user_id < 2)
|
|
SELECT * FROM cte_1) as foo
|
|
WHERE
|
|
users_table.user_id = foo.user_id
|
|
ORDER BY 1 DESC;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM public.events_table WHERE (user_id OPERATOR(pg_catalog.<) 3)
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT user_id FROM public.events_table WHERE (user_id OPERATOR(pg_catalog.<) 2)
|
|
DEBUG: generating subplan XXX_3 for subquery SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT DISTINCT users_table.user_id FROM public.users_table, (SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_3'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1) foo WHERE (users_table.user_id OPERATOR(pg_catalog.=) foo.user_id) ORDER BY users_table.user_id DESC
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
1
|
|
(1 row)
|
|
|
|
-- UNION is created via outputs of CTEs, which is inside a subquery
|
|
-- and the subquery is joined with a distributed table
|
|
SELECT
|
|
count(*)
|
|
FROM
|
|
events_table,
|
|
(
|
|
WITH
|
|
cte_1 AS (SELECT user_id FROM users_table),
|
|
cte_2 AS (SELECT user_id FROM events_table)
|
|
(SELECT * FROM cte_1) UNION (SELECT * FROM cte_2)
|
|
) as foo
|
|
WHERE foo.user_id = events_table.event_type;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_2 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT user_id FROM (SELECT events_table.user_id FROM public.events_table) cte_2
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) UNION SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT cte_1.user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1 UNION SELECT cte_2.user_id FROM (SELECT events_table.user_id FROM public.events_table) cte_2
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM public.events_table, (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo WHERE (foo.user_id OPERATOR(pg_catalog.=) events_table.event_type)
|
|
count
|
|
---------------------------------------------------------------------
|
|
95
|
|
(1 row)
|
|
|
|
-- joins inside unions that are safe to pushdown
|
|
(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id )
|
|
INTERSECT
|
|
(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id )
|
|
ORDER BY 1 DESC;
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT DISTINCT events_table.user_id FROM public.users_table, public.events_table WHERE (users_table.user_id OPERATOR(pg_catalog.=) events_table.user_id)
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT DISTINCT events_table.user_id FROM public.users_table, public.events_table WHERE (users_table.user_id OPERATOR(pg_catalog.=) events_table.user_id)
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) ORDER BY 1 DESC
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
6
|
|
5
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(6 rows)
|
|
|
|
-- joins inside unions that are not safe to pushdown
|
|
(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id LIMIT 10)
|
|
INTERSECT
|
|
(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id LIMIT 10)
|
|
ORDER BY 1 DESC;
|
|
DEBUG: push down of limit count: 10
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT DISTINCT events_table.user_id FROM public.users_table, public.events_table WHERE (users_table.user_id OPERATOR(pg_catalog.=) events_table.user_id) LIMIT 10
|
|
DEBUG: push down of limit count: 10
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT DISTINCT events_table.user_id FROM public.users_table, public.events_table WHERE (users_table.user_id OPERATOR(pg_catalog.=) events_table.user_id) LIMIT 10
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) ORDER BY 1 DESC
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
6
|
|
5
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(6 rows)
|
|
|
|
-- joins inside unions that are not safe to pushdown inside a subquery
|
|
SELECT
|
|
count(*)
|
|
FROM
|
|
(SELECT DISTINCT value_2 FROM events_table) as events_table,
|
|
(WITH foo AS
|
|
((SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id )
|
|
INTERSECT
|
|
(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id LIMIT 10))
|
|
SELECT * FROM foo)
|
|
as foo
|
|
WHERE
|
|
foo.user_id = events_table.value_2;
|
|
DEBUG: CTE foo is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT DISTINCT value_2 FROM public.events_table
|
|
DEBUG: push down of limit count: 10
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT DISTINCT events_table.user_id FROM public.users_table, public.events_table WHERE (users_table.user_id OPERATOR(pg_catalog.=) events_table.user_id) LIMIT 10
|
|
DEBUG: generating subplan XXX_3 for subquery SELECT DISTINCT events_table.user_id FROM public.users_table, public.events_table WHERE (users_table.user_id OPERATOR(pg_catalog.=) events_table.user_id)
|
|
DEBUG: generating subplan XXX_4 for subquery SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_3'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT intermediate_result.value_2 FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(value_2 integer)) events_table, (SELECT foo_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_4'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo_1) foo WHERE (foo.user_id OPERATOR(pg_catalog.=) events_table.value_2)
|
|
count
|
|
---------------------------------------------------------------------
|
|
5
|
|
(1 row)
|
|
|
|
-- joins inside unions some safe to pushdown
|
|
SELECT
|
|
count(*)
|
|
FROM
|
|
(WITH events_table AS (SELECT DISTINCT user_id FROM events_table) SELECT * FROM events_table) as events_table,
|
|
((SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id )
|
|
INTERSECT
|
|
(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id LIMIT 10)) as foo
|
|
WHERE
|
|
foo.user_id = events_table.user_id;
|
|
DEBUG: CTE events_table is going to be inlined via distributed planning
|
|
DEBUG: push down of limit count: 10
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT DISTINCT events_table.user_id FROM public.users_table, public.events_table WHERE (users_table.user_id OPERATOR(pg_catalog.=) events_table.user_id) LIMIT 10
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT DISTINCT events_table.user_id FROM public.users_table, public.events_table WHERE (users_table.user_id OPERATOR(pg_catalog.=) events_table.user_id)
|
|
DEBUG: generating subplan XXX_3 for subquery SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT events_table_1.user_id FROM (SELECT DISTINCT events_table_2.user_id FROM public.events_table events_table_2) events_table_1) events_table, (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_3'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo WHERE (foo.user_id OPERATOR(pg_catalog.=) events_table.user_id)
|
|
count
|
|
---------------------------------------------------------------------
|
|
6
|
|
(1 row)
|
|
|
|
-- CTE inside unions
|
|
(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1) UNION
|
|
(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1) ORDER BY 1 DESC;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) UNION SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) ORDER BY 1 DESC
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
6
|
|
5
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(6 rows)
|
|
|
|
-- more complex CTEs inside unions
|
|
SELECT
|
|
count(*)
|
|
FROM
|
|
(
|
|
(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1) UNION
|
|
(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1)
|
|
) as foo,
|
|
users_table
|
|
WHERE users_table.value_2 = foo.user_id;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) UNION SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT cte_1.user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1 UNION SELECT cte_1.user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
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)) foo, public.users_table WHERE (users_table.value_2 OPERATOR(pg_catalog.=) foo.user_id)
|
|
count
|
|
---------------------------------------------------------------------
|
|
92
|
|
(1 row)
|
|
|
|
-- CTEs with less alias than the input subquery
|
|
(WITH cte_1(x) AS (SELECT user_id, value_2 FROM users_table) SELECT * FROM cte_1) UNION
|
|
(WITH cte_1(x) AS (SELECT user_id, value_2 FROM users_table) SELECT * FROM cte_1) ORDER BY 1 DESC, 2 DESC LIMIT 5;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT x, value_2 FROM (SELECT users_table.user_id AS x, users_table.value_2 FROM public.users_table) cte_1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT x, value_2 FROM (SELECT users_table.user_id AS x, users_table.value_2 FROM public.users_table) cte_1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.x, intermediate_result.value_2 FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(x integer, value_2 integer) UNION SELECT intermediate_result.x, intermediate_result.value_2 FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(x integer, value_2 integer) ORDER BY 1 DESC, 2 DESC LIMIT 5
|
|
x | value_2
|
|
---------------------------------------------------------------------
|
|
6 |
|
|
6 | 4
|
|
6 | 3
|
|
6 | 2
|
|
6 | 1
|
|
(5 rows)
|
|
|
|
-- simple subqueries in WHERE with unions
|
|
SELECT
|
|
count(*)
|
|
FROM
|
|
users_table
|
|
WHERE
|
|
value_2 IN
|
|
(
|
|
WITH cte_1 AS
|
|
(
|
|
(SELECT user_id FROM users_table)
|
|
UNION
|
|
(SELECT user_id FROM events_table)
|
|
) SELECT DISTINCT user_id FROM cte_1
|
|
)
|
|
ORDER BY 1 DESC;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT DISTINCT user_id FROM (SELECT users_table.user_id FROM public.users_table UNION SELECT events_table.user_id FROM public.events_table) cte_1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM public.users_table WHERE (value_2 OPERATOR(pg_catalog.=) ANY (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer))) ORDER BY (count(*)) DESC
|
|
count
|
|
---------------------------------------------------------------------
|
|
92
|
|
(1 row)
|
|
|
|
-- simple subqueries in WHERE with unions and ctes
|
|
SELECT
|
|
count(*)
|
|
FROM
|
|
users_table
|
|
WHERE
|
|
value_2 IN
|
|
(
|
|
WITH
|
|
cte_1 AS (SELECT user_id FROM users_table),
|
|
cte_2 AS (SELECT user_id FROM events_table)
|
|
(SELECT * FROM cte_1) UNION (SELECT * FROM cte_2)
|
|
)
|
|
ORDER BY 1 DESC;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_2 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT user_id FROM (SELECT events_table.user_id FROM public.events_table) cte_2
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) UNION SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT cte_1.user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1 UNION SELECT cte_2.user_id FROM (SELECT events_table.user_id FROM public.events_table) cte_2
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT count(*) AS count FROM public.users_table WHERE (value_2 OPERATOR(pg_catalog.=) ANY (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer))) ORDER BY (count(*)) DESC
|
|
count
|
|
---------------------------------------------------------------------
|
|
92
|
|
(1 row)
|
|
|
|
-- unions and ctes inside subqueries in where clause with a pushdownable correlated subquery
|
|
SELECT
|
|
DISTINCT user_id
|
|
FROM
|
|
events_table
|
|
WHERE
|
|
event_type IN
|
|
(
|
|
SELECT
|
|
users_table.user_id
|
|
FROM
|
|
(
|
|
(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1) UNION
|
|
(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1)
|
|
) as foo,
|
|
users_table
|
|
WHERE users_table.value_2 = foo.user_id AND events_table.user_id = users_table.user_id
|
|
)
|
|
ORDER BY 1 DESC;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) UNION SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT cte_1.user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1 UNION SELECT cte_1.user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT DISTINCT user_id FROM public.events_table WHERE (event_type OPERATOR(pg_catalog.=) ANY (SELECT users_table.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo, public.users_table WHERE ((users_table.value_2 OPERATOR(pg_catalog.=) foo.user_id) AND (events_table.user_id OPERATOR(pg_catalog.=) users_table.user_id)))) ORDER BY user_id DESC
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
5
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(5 rows)
|
|
|
|
-- unions and ctes inside subqueries in where clause with a not pushdownable correlated subquery
|
|
-- should error out
|
|
SELECT
|
|
DISTINCT user_id
|
|
FROM
|
|
events_table
|
|
WHERE
|
|
event_type IN
|
|
(
|
|
SELECT
|
|
users_table.user_id
|
|
FROM
|
|
(
|
|
(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1) UNION
|
|
(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1)
|
|
) as foo,
|
|
users_table
|
|
WHERE users_table.value_2 = foo.user_id AND events_table.user_id = users_table.user_id
|
|
LIMIT 5
|
|
)
|
|
ORDER BY 1 DESC;
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: CTE cte_1 is going to be inlined via distributed planning
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: generating subplan XXX_2 for subquery SELECT user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) UNION SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
|
|
DEBUG: generating subplan XXX_1 for subquery SELECT cte_1.user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1 UNION SELECT cte_1.user_id FROM (SELECT users_table.user_id FROM public.users_table) cte_1
|
|
DEBUG: Plan XXX query after replacing subqueries and CTEs: SELECT DISTINCT user_id FROM public.events_table WHERE (event_type OPERATOR(pg_catalog.=) ANY (SELECT users_table.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('XXX_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo, public.users_table WHERE ((users_table.value_2 OPERATOR(pg_catalog.=) foo.user_id) AND (events_table.user_id OPERATOR(pg_catalog.=) users_table.user_id)) LIMIT 5)) ORDER BY user_id DESC
|
|
user_id
|
|
---------------------------------------------------------------------
|
|
5
|
|
4
|
|
3
|
|
2
|
|
1
|
|
(5 rows)
|
|
|
|
SET client_min_messages TO DEFAULT;
|
|
SET search_path TO public;
|