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27 lines
1.3 KiB
SQL
27 lines
1.3 KiB
SQL
SET allow_experimental_analyzer = 1;
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DROP TABLE IF EXISTS 02952_disjunction_optimization;
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CREATE TABLE 02952_disjunction_optimization
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(a Int32, b String)
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ENGINE=Memory;
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INSERT INTO 02952_disjunction_optimization VALUES (1, 'test'), (2, 'test2'), (3, 'another'), (3, ''), (4, '');
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SELECT * FROM 02952_disjunction_optimization WHERE a <> 1 AND a <> 2 AND a <> 4;
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EXPLAIN QUERY TREE SELECT * FROM 02952_disjunction_optimization WHERE a <> 1 AND a <> 2 AND a <> 4;
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SELECT * FROM 02952_disjunction_optimization WHERE a <> 1 AND a <> 2 AND a <> 4 AND true;
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EXPLAIN QUERY TREE SELECT * FROM 02952_disjunction_optimization WHERE a <> 1 AND a <> 2 AND a <> 4 AND true;
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SELECT * FROM 02952_disjunction_optimization WHERE a <> 1 AND a <> 2 AND a <> 4 AND b <> '';
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EXPLAIN QUERY TREE SELECT * FROM 02952_disjunction_optimization WHERE a <> 1 AND a <> 2 AND a <> 4 AND b <> '';
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SELECT * FROM 02952_disjunction_optimization WHERE a <> 1 AND a <> 2 AND b = '' AND a <> 4;
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EXPLAIN QUERY TREE SELECT * FROM 02952_disjunction_optimization WHERE a <> 1 AND a <> 2 AND b = '' AND a <> 4;
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SELECT * FROM 02952_disjunction_optimization WHERE (a <> 1 AND a <> 2 AND a <> 4) OR b = '';
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EXPLAIN QUERY TREE SELECT * FROM 02952_disjunction_optimization WHERE (a <> 1 AND a <> 2 AND a <> 4) OR b = '';
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DROP TABLE 02952_disjunction_optimization;
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