SET FIELD VALUE NULL
SET FIELD VALUE NULL ( aField )
| Parameter | Type | Description | |
|---|---|---|---|
| aField | Field | → | Field where NULL value is to be attributed |
Description
The SET FIELD VALUE NULL command assigns the NULL value to the field designated by the aField parameter.
The NULL value is used by the SQL kernel of 4D. For more information, please refer to the 4D SQL Reference manual.
Notes:
- It is possible to disallow the Null value for 4D fields at the Structure editor level (see the Design Reference manual).
- SET FIELD VALUE NULL erases the contents of object fields.
See also
Properties
| Command number | 965 |
| Thread safe | ✓ |