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33 lines
1.2 KiB
SQL
33 lines
1.2 KiB
SQL
SET allow_experimental_analyzer = 1;
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DROP TABLE IF EXISTS 02702_logical_optimizer;
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CREATE TABLE 02702_logical_optimizer
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(a Int32, b LowCardinality(String))
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ENGINE=Memory;
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INSERT INTO 02702_logical_optimizer VALUES (1, 'test'), (2, 'test2'), (3, 'another');
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SET optimize_min_equality_disjunction_chain_length = 3;
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SELECT * FROM 02702_logical_optimizer WHERE a = 1 OR 3 = a OR NULL = a;
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EXPLAIN QUERY TREE SELECT * FROM 02702_logical_optimizer WHERE a = 1 OR 3 = a OR NULL = a;
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SELECT * FROM 02702_logical_optimizer WHERE a = 1 OR 3 = a OR 2 = a OR a = NULL;
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EXPLAIN QUERY TREE SELECT * FROM 02702_logical_optimizer WHERE a = 1 OR 3 = a OR 2 = a OR a = NULL;
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DROP TABLE 02702_logical_optimizer;
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DROP TABLE IF EXISTS 02702_logical_optimizer_with_null_column;
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CREATE TABLE 02702_logical_optimizer_with_null_column
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(a Nullable(Int32), b LowCardinality(String))
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ENGINE=Memory;
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INSERT INTO 02702_logical_optimizer_with_null_column VALUES (1, 'test'), (2, 'test2'), (3, 'another');
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SELECT * FROM 02702_logical_optimizer_with_null_column WHERE a = 1 OR 3 = a OR 2 = a;
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EXPLAIN QUERY TREE SELECT * FROM 02702_logical_optimizer_with_null_column WHERE a = 1 OR 3 = a OR 2 = a;
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DROP TABLE 02702_logical_optimizer_with_null_column;
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