The $UPDSTMT function is used in conjunction with the ON FIELD CONSTRAINT CONFLICT unit.
If $UPDSTMT is invoked from an ON FCC unit following the detection of a field-level constraint conflict, it returns the type of User Language statement causing the conflict. The possible values $UPDSTMT returns are:
In all other cases, $UPDSTMT returns a null string. The $UPDSTMT function takes no arguments.