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14 lines
524 B
MySQL
14 lines
524 B
MySQL
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DROP TABLE IF EXISTS nullable_key;
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CREATE TABLE nullable_key (k Nullable(int), v int) ENGINE MergeTree ORDER BY k SETTINGS allow_nullable_key = 1;
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INSERT INTO nullable_key SELECT number * 2, number * 3 FROM numbers(10);
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INSERT INTO nullable_key SELECT NULL, -number FROM numbers(3);
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SELECT * FROM nullable_key ORDER BY k;
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SELECT * FROM nullable_key WHERE k IS NULL;
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SELECT * FROM nullable_key WHERE k IS NOT NULL;
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SELECT * FROM nullable_key WHERE k > 10;
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SELECT * FROM nullable_key WHERE k < 10;
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DROP TABLE nullable_key;
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