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62 lines
1.1 KiB
SQL
62 lines
1.1 KiB
SQL
SELECT
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0 OR NULL,
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1 OR NULL,
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toNullable(0) OR NULL,
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toNullable(1) OR NULL,
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0.0 OR NULL,
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0.1 OR NULL,
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NULL OR 1 OR NULL,
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0 OR NULL OR 1 OR NULL;
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SELECT
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0 AND NULL,
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1 AND NULL,
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toNullable(0) AND NULL,
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toNullable(1) AND NULL,
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0.0 AND NULL,
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0.1 AND NULL,
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NULL AND 1 AND NULL,
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0 AND NULL AND 1 AND NULL;
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SELECT
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x,
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0 OR x,
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1 OR x,
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x OR x,
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toNullable(0) OR x,
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toNullable(1) OR x,
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0.0 OR x,
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0.1 OR x,
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x OR 1 OR x,
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0 OR x OR 1 OR x
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FROM (SELECT number % 2 ? number % 3 : NULL AS x FROM system.numbers LIMIT 10);
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SELECT
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x,
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0 AND x,
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1 AND x,
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x AND x,
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toNullable(0) AND x,
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toNullable(1) AND x,
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0.0 AND x,
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0.1 AND x,
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x AND 1 AND x,
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0 AND x AND 1 AND x
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FROM (SELECT number % 2 ? number % 3 : NULL AS x FROM system.numbers LIMIT 10);
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DROP TABLE IF EXISTS test;
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CREATE TABLE test
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(
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x Nullable(Int32)
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) ENGINE = Log;
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INSERT INTO test VALUES(1), (0), (null);
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SELECT * FROM test;
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SELECT x FROM test WHERE x != 0;
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SELECT x FROM test WHERE x != 0 OR isNull(x);
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SELECT x FROM test WHERE x != 1;
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DROP TABLE test;
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