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26 lines
1.4 KiB
SQL
26 lines
1.4 KiB
SQL
DROP TABLE IF EXISTS merge_tree_in_subqueries;
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CREATE TABLE merge_tree_in_subqueries (id UInt64, name String, num UInt64) ENGINE = MergeTree ORDER BY (id, name);
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INSERT INTO merge_tree_in_subqueries VALUES(1, 'test1', 42);
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INSERT INTO merge_tree_in_subqueries VALUES(2, 'test2', 8);
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INSERT INTO merge_tree_in_subqueries VALUES(3, 'test3', 8);
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INSERT INTO merge_tree_in_subqueries VALUES(4, 'test4', 1985);
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INSERT INTO merge_tree_in_subqueries VALUES(5, 'test5', 0);
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-- Index scans.
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SET force_primary_key = 1;
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SELECT * FROM merge_tree_in_subqueries WHERE id IN (SELECT * FROM system.numbers LIMIT 0);
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SELECT * FROM merge_tree_in_subqueries WHERE id IN (SELECT * FROM system.numbers LIMIT 2, 3) ORDER BY id;
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SELECT * FROM merge_tree_in_subqueries WHERE name IN (SELECT 'test' || toString(number) FROM system.numbers LIMIT 2, 3) ORDER BY id;
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SELECT id AS id2, name AS value FROM merge_tree_in_subqueries WHERE (value, id2) IN (SELECT 'test' || toString(number), number FROM system.numbers LIMIT 2, 3) ORDER BY id;
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-- Non-index scans.
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SET force_primary_key = 0;
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SELECT id AS id2, name AS value FROM merge_tree_in_subqueries WHERE num IN (SELECT number FROM system.numbers LIMIT 10) ORDER BY id;
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SELECT id AS id2, name AS value FROM merge_tree_in_subqueries WHERE (id, num) IN (SELECT number, number + 6 FROM system.numbers LIMIT 10) ORDER BY id;
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DROP TABLE IF EXISTS merge_tree_in_subqueries;
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