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13 lines
371 B
MySQL
13 lines
371 B
MySQL
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DROP TABLE IF EXISTS t_map_contains;
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CREATE TABLE t_map_contains (m Map(String, UInt32)) ENGINE = Memory;
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INSERT INTO t_map_contains VALUES (map('a', 1, 'b', 2)), (map('c', 3, 'd', 4));
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SET optimize_functions_to_subcolumns = 1;
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EXPLAIN SYNTAX SELECT mapContains(m, 'a') FROM t_map_contains;
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SELECT mapContains(m, 'a') FROM t_map_contains;
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DROP TABLE t_map_contains;
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