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version 11
Is field value Null (aField) 
Boolean
| Parameter | Type | Description | |
| aField | Field | | Field to be evaluated |
| Function result | Boolean |  | True = field is NULL, |
| False = field is not NULL |
Description
The Is field value Null command returns True if the field designated by the aField parameter contains the NULL value, and False otherwise.
The NULL value is used by the SQL kernel of 4D. For more information, please refer to the 4D SQL Reference manual.
See Also
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