The FLDNULL function checks the value of a field pointed to by an index for a given record layout is NULL. Returns TRUE(1) if the value of a field pointed to by an index for a given record layout is NULL else returns FALSE(0).
Category
Record
Syntax
*FLDNULL(* index )*
*FLDNULL(REC_ALIAS*, index)*
*FLDNULL('<recname>' | variable *, index *)*
Parameter and Description
| Parameter | Description |
|---|---|
| <recname> |
Resolves at runtime to a string and represent the record name used to locate the record alias in the description of the input datastore. |
| index |
An index pointer to a given field within the specified record alias of the input datastore. |
Example
IF FLDNULL(RECNAME(INPUT DATASTORE, V_INDEX) = TRUE (1)