documentationis_null¶
Description¶
Return true if the argument has the null value.
Return type¶
bool
Domain¶
This is a scalar function (calculates a single output value for a single input row.)
Categories¶
Usage¶
is_null( arg )
Argument |
Type |
Required |
Multiple |
Constant |
|---|---|---|---|---|
arg |
variant |
Required |
Only one |
Variable |
Aliases¶
isnull (deprecated)