is_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(value)
Argument |
Type |
Optional |
Repeatable |
Restrictions |
|---|---|---|---|---|
value |
storable |
no |
no |
none |
Examples¶
filter not is_null(path)
This filters a dataset to remove any lines where path is null.
Aliases¶
isnull (deprecated)