mirror of https://github.com/citusdata/citus.git
418 lines
27 KiB
Plaintext
418 lines
27 KiB
Plaintext
-- ===================================================================
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-- test recursive planning functionality with Set Operations and CTEs
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-- ===================================================================
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SET client_min_messages TO DEBUG1;
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-- use ctes inside unions on the top level
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WITH
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cte_1 AS (SELECT user_id FROM users_table),
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cte_2 AS (SELECT user_id FROM events_table)
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(SELECT * FROM cte_1) UNION (SELECT * FROM cte_2)
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ORDER BY 1 DESC;
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DEBUG: generating subplan 1_1 for CTE cte_1: SELECT user_id FROM public.users_table
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DEBUG: generating subplan 1_2 for CTE cte_2: SELECT user_id FROM public.events_table
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DEBUG: Plan 1 query after replacing subqueries and CTEs: SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('1_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 UNION SELECT cte_2.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('1_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_2 ORDER BY 1 DESC
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user_id
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---------
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6
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5
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4
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3
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2
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1
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(6 rows)
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-- use ctes inside unions in a subquery
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WITH
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cte_1 AS (SELECT user_id FROM users_table),
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cte_2 AS (SELECT user_id FROM events_table)
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SELECT
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count(*)
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FROM (
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(SELECT * FROM cte_1) UNION (SELECT * FROM cte_2)
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) as foo;
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DEBUG: generating subplan 4_1 for CTE cte_1: SELECT user_id FROM public.users_table
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DEBUG: generating subplan 4_2 for CTE cte_2: SELECT user_id FROM public.events_table
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DEBUG: generating subplan 4_3 for subquery SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('4_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 UNION SELECT cte_2.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('4_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_2
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DEBUG: Plan 4 query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('4_3'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo
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count
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-------
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6
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(1 row)
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-- cte with unions of other ctes
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WITH
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cte_1 AS (SELECT user_id FROM users_table),
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cte_2 AS (SELECT user_id FROM events_table),
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cte_3 AS ((SELECT * FROM cte_1) UNION (SELECT * FROM cte_2))
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SELECT * FROM cte_3 ORDER BY 1 DESC;
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DEBUG: generating subplan 8_1 for CTE cte_1: SELECT user_id FROM public.users_table
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DEBUG: generating subplan 8_2 for CTE cte_2: SELECT user_id FROM public.events_table
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DEBUG: generating subplan 8_3 for CTE cte_3: SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('8_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 UNION SELECT cte_2.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('8_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_2
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DEBUG: Plan 8 query after replacing subqueries and CTEs: SELECT user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('8_3'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_3 ORDER BY user_id DESC
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user_id
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---------
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6
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5
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4
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3
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2
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1
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(6 rows)
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-- cte with unions of distributed table
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WITH
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cte_1 AS ((SELECT user_id FROM users_table) UNION (SELECT user_id FROM users_table))
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SELECT * FROM cte_1 ORDER BY 1 DESC;
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DEBUG: generating subplan 12_1 for CTE cte_1: SELECT users_table.user_id FROM public.users_table UNION SELECT users_table.user_id FROM public.users_table
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DEBUG: generating subplan 13_1 for subquery SELECT user_id FROM public.users_table
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DEBUG: generating subplan 13_2 for subquery SELECT user_id FROM public.users_table
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DEBUG: Plan 13 query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('13_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) UNION SELECT intermediate_result.user_id FROM read_intermediate_result('13_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
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DEBUG: Plan 12 query after replacing subqueries and CTEs: SELECT user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('12_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 ORDER BY user_id DESC
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user_id
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---------
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6
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5
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4
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3
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2
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1
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(6 rows)
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-- cte with unions of tables is intersected with another query
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WITH
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cte_1 AS ((SELECT user_id FROM users_table) UNION (SELECT user_id FROM users_table))
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(SELECT * FROM cte_1) INTERSECT (SELECT user_id FROM users_table) ORDER BY 1 DESC;
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DEBUG: generating subplan 16_1 for CTE cte_1: SELECT users_table.user_id FROM public.users_table UNION SELECT users_table.user_id FROM public.users_table
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DEBUG: generating subplan 17_1 for subquery SELECT user_id FROM public.users_table
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DEBUG: generating subplan 17_2 for subquery SELECT user_id FROM public.users_table
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DEBUG: Plan 17 query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('17_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) UNION SELECT intermediate_result.user_id FROM read_intermediate_result('17_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
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DEBUG: generating subplan 16_2 for subquery SELECT user_id FROM public.users_table
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DEBUG: Plan 16 query after replacing subqueries and CTEs: SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('16_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('16_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) ORDER BY 1 DESC
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user_id
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---------
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6
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5
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4
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3
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2
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1
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(6 rows)
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-- cte with unions of tables is intersected with another query that involves except
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WITH
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cte_1 AS ((SELECT user_id FROM users_table) UNION (SELECT user_id FROM users_table))
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(SELECT * FROM cte_1)
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INTERSECT
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((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;
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DEBUG: generating subplan 21_1 for CTE cte_1: SELECT users_table.user_id FROM public.users_table UNION SELECT users_table.user_id FROM public.users_table
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DEBUG: generating subplan 22_1 for subquery SELECT user_id FROM public.users_table
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DEBUG: generating subplan 22_2 for subquery SELECT user_id FROM public.users_table
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DEBUG: Plan 22 query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('22_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) UNION SELECT intermediate_result.user_id FROM read_intermediate_result('22_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
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DEBUG: generating subplan 21_2 for subquery SELECT user_id FROM public.events_table WHERE (user_id OPERATOR(pg_catalog.<) 3)
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DEBUG: generating subplan 21_3 for subquery SELECT user_id FROM public.users_table WHERE (user_id OPERATOR(pg_catalog.>) 4)
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DEBUG: Plan 21 query after replacing subqueries and CTEs: SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('21_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 INTERSECT (SELECT intermediate_result.user_id FROM read_intermediate_result('21_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) EXCEPT SELECT intermediate_result.user_id FROM read_intermediate_result('21_3'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) ORDER BY 1 DESC
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user_id
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---------
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2
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1
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(2 rows)
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-- CTE inside a top level EXCEPT
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(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;
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DEBUG: generating subplan 27_1 for CTE cte_1: SELECT user_id FROM public.events_table WHERE (user_id OPERATOR(pg_catalog.<) 3)
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DEBUG: generating subplan 27_2 for subquery SELECT user_id FROM public.users_table
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DEBUG: Plan 27 query after replacing subqueries and CTEs: SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('27_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('27_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) ORDER BY 1
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user_id
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---------
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1
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2
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(2 rows)
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-- INTERSECT inside a CTE, which is inside a subquery
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SELECT
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DISTINCT users_table.user_id
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FROM
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users_table,
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(WITH cte_1 AS (SELECT user_id FROM events_table WHERE user_id < 3 INTERSECT
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SELECT user_id FROM events_table WHERE user_id < 2)
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SELECT * FROM cte_1) as foo
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WHERE
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users_table.user_id = foo.user_id
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ORDER BY 1 DESC;
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DEBUG: generating subplan 30_1 for CTE cte_1: SELECT events_table.user_id FROM public.events_table WHERE (events_table.user_id OPERATOR(pg_catalog.<) 3) INTERSECT SELECT events_table.user_id FROM public.events_table WHERE (events_table.user_id OPERATOR(pg_catalog.<) 2)
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DEBUG: generating subplan 31_1 for subquery SELECT user_id FROM public.events_table WHERE (user_id OPERATOR(pg_catalog.<) 3)
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DEBUG: generating subplan 31_2 for subquery SELECT user_id FROM public.events_table WHERE (user_id OPERATOR(pg_catalog.<) 2)
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DEBUG: Plan 31 query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('31_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('31_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
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DEBUG: Plan 30 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('30_1'::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
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user_id
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---------
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1
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(1 row)
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-- UNION is created via outputs of CTEs, which is inside a subquery
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-- and the subquery is joined with a distributed table
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SELECT
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count(*)
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FROM
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events_table,
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(
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WITH
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cte_1 AS (SELECT user_id FROM users_table),
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cte_2 AS (SELECT user_id FROM events_table)
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(SELECT * FROM cte_1) UNION (SELECT * FROM cte_2)
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) as foo
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WHERE foo.user_id = events_table.event_type;
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DEBUG: generating subplan 34_1 for CTE cte_1: SELECT user_id FROM public.users_table
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DEBUG: generating subplan 34_2 for CTE cte_2: SELECT user_id FROM public.events_table
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DEBUG: generating subplan 34_3 for subquery SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('34_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 UNION SELECT cte_2.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('34_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_2
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DEBUG: Plan 34 query after replacing subqueries and CTEs: SELECT count(*) AS count FROM public.events_table, (SELECT intermediate_result.user_id FROM read_intermediate_result('34_3'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo WHERE (foo.user_id OPERATOR(pg_catalog.=) events_table.event_type)
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count
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-------
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95
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(1 row)
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-- joins inside unions that are safe to pushdown
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(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id )
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INTERSECT
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(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id )
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ORDER BY 1 DESC;
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DEBUG: generating subplan 38_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)
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DEBUG: generating subplan 38_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)
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DEBUG: Plan 38 query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('38_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('38_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) ORDER BY 1 DESC
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user_id
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---------
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6
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5
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4
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3
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2
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1
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(6 rows)
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-- joins inside unions that are not safe to pushdown
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(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id LIMIT 10)
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INTERSECT
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(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id LIMIT 10)
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ORDER BY 1 DESC;
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DEBUG: push down of limit count: 10
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DEBUG: generating subplan 41_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
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DEBUG: push down of limit count: 10
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DEBUG: generating subplan 41_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
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DEBUG: Plan 41 query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('41_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('41_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) ORDER BY 1 DESC
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user_id
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---------
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6
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5
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4
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3
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2
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1
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(6 rows)
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-- joins inside unions that are not safe to pushdown inside a subquery
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SELECT
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count(*)
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FROM
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(SELECT DISTINCT value_2 FROM events_table) as events_table,
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(WITH foo AS
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((SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id )
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INTERSECT
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(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id LIMIT 10))
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SELECT * FROM foo)
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as foo
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WHERE
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foo.user_id = events_table.value_2;
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DEBUG: generating subplan 44_1 for subquery SELECT DISTINCT value_2 FROM public.events_table
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DEBUG: generating subplan 44_2 for CTE foo: 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) INTERSECT (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)
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DEBUG: push down of limit count: 10
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DEBUG: generating subplan 46_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
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DEBUG: generating subplan 46_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)
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DEBUG: Plan 46 query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('46_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('46_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
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DEBUG: Plan 44 query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT intermediate_result.value_2 FROM read_intermediate_result('44_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('44_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo_1) foo WHERE (foo.user_id OPERATOR(pg_catalog.=) events_table.value_2)
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count
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-------
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5
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(1 row)
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-- joins inside unions some safe to pushdown
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SELECT
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count(*)
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FROM
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(WITH events_table AS (SELECT DISTINCT user_id FROM events_table) SELECT * FROM events_table) as events_table,
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((SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id )
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INTERSECT
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(SELECT DISTINCT events_table.user_id FROM users_table, events_table WHERE users_table.user_id = events_table.user_id LIMIT 10)) as foo
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WHERE
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foo.user_id = events_table.user_id;
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DEBUG: generating subplan 49_1 for CTE events_table: SELECT DISTINCT user_id FROM public.events_table
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DEBUG: push down of limit count: 10
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DEBUG: generating subplan 49_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
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DEBUG: generating subplan 49_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)
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DEBUG: generating subplan 49_4 for subquery SELECT intermediate_result.user_id FROM read_intermediate_result('49_3'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) INTERSECT SELECT intermediate_result.user_id FROM read_intermediate_result('49_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
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DEBUG: Plan 49 query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT events_table_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('49_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) events_table_1) events_table, (SELECT intermediate_result.user_id FROM read_intermediate_result('49_4'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) foo WHERE (foo.user_id OPERATOR(pg_catalog.=) events_table.user_id)
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count
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-------
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6
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(1 row)
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-- CTE inside unions
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(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1) UNION
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(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1) ORDER BY 1 DESC;
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DEBUG: generating subplan 54_1 for CTE cte_1: SELECT user_id FROM public.users_table
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DEBUG: generating subplan 54_2 for CTE cte_1: SELECT user_id FROM public.users_table
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DEBUG: Plan 54 query after replacing subqueries and CTEs: SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('54_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 UNION SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('54_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 ORDER BY 1 DESC
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user_id
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---------
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6
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5
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4
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3
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2
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1
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(6 rows)
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-- more complex CTEs inside unions
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SELECT
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count(*)
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FROM
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(
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(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1) UNION
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(WITH cte_1 AS (SELECT user_id FROM users_table) SELECT * FROM cte_1)
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) as foo,
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users_table
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WHERE users_table.value_2 = foo.user_id;
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DEBUG: generating subplan 57_1 for CTE cte_1: SELECT user_id FROM public.users_table
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DEBUG: generating subplan 57_2 for CTE cte_1: SELECT user_id FROM public.users_table
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DEBUG: generating subplan 57_3 for subquery SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('57_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 UNION SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('57_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1
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DEBUG: Plan 57 query after replacing subqueries and CTEs: SELECT count(*) AS count FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('57_3'::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
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(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;
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|
DEBUG: generating subplan 61_1 for CTE cte_1: SELECT user_id, value_2 FROM public.users_table
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|
DEBUG: generating subplan 61_2 for CTE cte_1: SELECT user_id, value_2 FROM public.users_table
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|
DEBUG: Plan 61 query after replacing subqueries and CTEs: SELECT cte_1.x, cte_1.value_2 FROM (SELECT intermediate_result.user_id AS x, intermediate_result.value_2 FROM read_intermediate_result('61_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, value_2 integer)) cte_1 UNION SELECT cte_1.x, cte_1.value_2 FROM (SELECT intermediate_result.user_id AS x, intermediate_result.value_2 FROM read_intermediate_result('61_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer, value_2 integer)) cte_1 ORDER BY 1 DESC, 2 DESC LIMIT 5
|
|
x | value_2
|
|
---+---------
|
|
6 | 4
|
|
6 | 3
|
|
6 | 2
|
|
6 | 1
|
|
6 | 0
|
|
(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: generating subplan 64_1 for CTE cte_1: SELECT users_table.user_id FROM public.users_table UNION SELECT events_table.user_id FROM public.events_table
|
|
DEBUG: generating subplan 65_1 for subquery SELECT user_id FROM public.users_table
|
|
DEBUG: generating subplan 65_2 for subquery SELECT user_id FROM public.events_table
|
|
DEBUG: Plan 65 query after replacing subqueries and CTEs: SELECT intermediate_result.user_id FROM read_intermediate_result('65_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer) UNION SELECT intermediate_result.user_id FROM read_intermediate_result('65_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)
|
|
DEBUG: Plan 64 query after replacing subqueries and CTEs: SELECT count(*) AS count FROM public.users_table WHERE (value_2 OPERATOR(pg_catalog.=) ANY (SELECT DISTINCT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('64_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1)) 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: generating subplan 68_1 for CTE cte_1: SELECT user_id FROM public.users_table
|
|
DEBUG: generating subplan 68_2 for CTE cte_2: SELECT user_id FROM public.events_table
|
|
DEBUG: generating subplan 68_3 for subquery SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('68_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 UNION SELECT cte_2.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('68_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_2
|
|
DEBUG: Plan 68 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('68_3'::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: generating subplan 72_1 for CTE cte_1: SELECT user_id FROM public.users_table
|
|
DEBUG: generating subplan 72_2 for CTE cte_1: SELECT user_id FROM public.users_table
|
|
DEBUG: generating subplan 72_3 for subquery SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('72_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 UNION SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('72_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1
|
|
DEBUG: Plan 72 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('72_3'::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: generating subplan 76_1 for CTE cte_1: SELECT user_id FROM public.users_table
|
|
DEBUG: generating subplan 76_2 for CTE cte_1: SELECT user_id FROM public.users_table
|
|
DEBUG: generating subplan 76_3 for subquery SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('76_1'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1 UNION SELECT cte_1.user_id FROM (SELECT intermediate_result.user_id FROM read_intermediate_result('76_2'::text, 'binary'::citus_copy_format) intermediate_result(user_id integer)) cte_1
|
|
DEBUG: Plan 76 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('76_3'::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
|
|
ERROR: cannot push down this subquery
|
|
DETAIL: Limit in subquery is currently unsupported when a subquery references a column from another query
|
|
SET client_min_messages TO DEFAULT;
|
|
SET search_path TO public;
|