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isnotnull

Checks whether the value is not NULL, returns 1 if it is not NULL, and returns 0 if it is NULL.

Syntax​

ISNOTNULL(v)

Parameters​

  • v: the value to check. All date types is supported.

Return value​

Returns 1 if it is not NULL, and returns 0 if it is NULL.

Examples​

MYSQL > SELECT c1, isnotnull(c1) FROM t1;
+------+--------------+
| c1   | `c1` IS NULL |
+------+--------------+
| NULL |            0 |
|    1 |            1 |
+------+--------------+