mirror of https://github.com/citusdata/citus.git
114 lines
2.5 KiB
SQL
114 lines
2.5 KiB
SQL
-- ===================================================================
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-- test recursive planning functionality with different executors
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-- ===================================================================
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CREATE SCHEMA subquery_executor;
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SET search_path TO subquery_executor, public;
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CREATE TABLE users_table_local AS SELECT * FROM users_table;
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SET client_min_messages TO DEBUG1;
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-- subquery with router planner
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SELECT
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count(*)
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FROM
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(
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SELECT value_2 FROM users_table WHERE user_id = 15 OFFSET 0
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) as foo,
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(
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SELECT user_id FROM users_table
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) as bar
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WHERE foo.value_2 = bar.user_id;
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-- subquery with router but not logical plannable
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-- bar is recursively planned
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SELECT
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count(*)
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FROM
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(
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SELECT user_id, sum(value_2) over (partition by user_id) AS counter FROM users_table WHERE user_id = 15
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) as foo,
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(
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SELECT user_id FROM users_table
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) as bar
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WHERE foo.counter = bar.user_id;
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-- subquery with real-time query
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SELECT
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count(*)
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FROM
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(
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SELECT value_2 FROM users_table WHERE user_id != 15 OFFSET 0
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) as foo,
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(
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SELECT user_id FROM users_table
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) as bar
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WHERE foo.value_2 = bar.user_id;
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-- subquery with repartition query
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SET citus.enable_repartition_joins to ON;
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SELECT
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count(*)
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FROM
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(
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SELECT DISTINCT users_table.value_2 FROM users_table, events_table WHERE users_table.user_id = events_table.value_2 AND users_table.user_id < 2
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) as foo,
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(
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SELECT user_id FROM users_table
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) as bar
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WHERE foo.value_2 = bar.user_id;
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-- mixed of all executors (including local execution)
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SELECT
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count(*)
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FROM
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(
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SELECT value_2 FROM users_table WHERE user_id = 15 OFFSET 0
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) as foo,
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(
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SELECT user_id FROM users_table OFFSET 0
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) as bar,
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(
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SELECT DISTINCT users_table.value_2 FROM users_table, events_table WHERE users_table.user_id = events_table.value_2 AND users_table.user_id < 2
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) baz,
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(
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SELECT user_id FROM users_table_local WHERE user_id = 2
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) baw
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WHERE foo.value_2 = bar.user_id AND baz.value_2 = bar.user_id AND bar.user_id = baw.user_id;
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SET citus.enable_repartition_joins to OFF;
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-- final query is router
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SELECT
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count(*)
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FROM
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(
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SELECT value_2 FROM users_table WHERE user_id = 1 OFFSET 0
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) as foo,
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(
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SELECT user_id FROM users_table WHERE user_id = 2 OFFSET 0
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) as bar
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WHERE foo.value_2 = bar.user_id;
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-- final query is real-time
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SELECT
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count(*)
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FROM
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(
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SELECT value_2 FROM users_table WHERE user_id = 1 OFFSET 0
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) as foo,
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(
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SELECT user_id FROM users_table WHERE user_id != 2
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) as bar
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WHERE foo.value_2 = bar.user_id;
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SET client_min_messages TO DEFAULT;
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DROP SCHEMA subquery_executor CASCADE;
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SET search_path TO public;
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