isemptyUUID
Checks whether an UUID is empty.
Syntax
isemptyUUID(x)
Arguments
| Arguments | Description | 
|---|---|
| x | A UUID. | 
Return Type
If x is empty, isemptyUUID() returns 1, otherwise it returns 0.
Examples
mysql> select isemptyUUID(generateUUIDv4());
+-------------------------------+
| isemptyUUID(generateUUIDv4()) |
+-------------------------------+
|                             0 |
+-------------------------------+
mysql> select isemptyUUID(zeroUUID());
+-------------------------+
| isemptyUUID(zeroUUID()) |
+-------------------------+
|                       1 |
+-------------------------+