The ISNULL (Is Null) function determines whether or not a value is null. If the value is null, a true (1) is returned. Otherwise, a false (0) is returned.
Category
Boolean
Syntax
ISNULL(value)
Parameter and Description
| Parameter | Description |
|---|---|
| value | This parameter specifies the value to be tested to determine whether or not it is a valid integer. The value to be tested can be a field from a source datastore, a variable or the result of another Function. 1 | 0 Indicates whether a TRUE (1) or FALSE (0) was returned from the ISNULL function. |
Example
Determine whether or not an employee’s address (EMP_ADDR) contains a null value. If the address is null, map a space (' ') to target field EMP_ADDR. Otherwise, map the source field to the target field.
IF ISNULL (EMP_ADDR) = 1
{
TGT_DS.EMP_ADDR = ''
}
ELSE
{
TGT_DS.EMP_ADDR = EMP_ADDR
}