Important
The SingleStore 9.1 release candidate (RC) is available now. It will be promoted to general availability (GA) soon and at that time it will be renamed to SingleStore 10.
In the interim, SingleStore 9.1 RC can be used to preview, evaluate, and provide feedback on the new and upcoming features in SingleStore 10, while SingleStore 9.0 is recommended for production workloads.
ISNULL
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The ISNULL() function returns true if the value is NULL.
Syntax
ISNULL (val)(val IS NULL)
Arguments
-
val: any object
Return Type
Boolean
Examples
SELECT ISNULL(NULL), ISNULL(0), (NULL + 0 is NULL), (0 is NULL);
+--------------+-----------+--------------------+-------------+
| ISNULL(NULL) | ISNULL(0) | (NULL + 0 is NULL) | (0 is NULL) |
+--------------+-----------+--------------------+-------------+
| 1 | 0 | 1 | 0 |
+--------------+-----------+--------------------+-------------+Last modified: