DEALLOCATE DESCRIPTOR — deallocate an SQL descriptor area
DEALLOCATE DESCRIPTOR name
DEALLOCATE DESCRIPTOR deallocates a named SQL descriptor area.
nameThe name of the descriptor which is going to be deallocated. It is case sensitive. This can be an SQL identifier or a host variable.
EXEC SQL DEALLOCATE DESCRIPTOR mydesc;
DEALLOCATE DESCRIPTOR is specified in the SQL standard.
Read the upstream documentation. For corrections, first check the current version.