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20 lines
272 B
SQL
20 lines
272 B
SQL
CREATE TABLE t(a INTEGER, ts timestamp time index);
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INSERT INTO t VALUES (1, 1), (null, 2), (3, 3);
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SELECT ISNULL(a) from t;
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SELECT ISNULL(null);
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SELECT ISNULL(1);
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SELECT ISNULL(-1);
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SELECT ISNULL(1.0);
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SELECT ISNULL(true);
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SELECT ISNULL('string');
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DROP TABLE t;
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