IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_PUR_CERTIFIAPPLY' AND KSQL_COL_NAME IN ('FLASTUPDATEUSERID')) 
 ALTER TABLE T_PUR_CERTIFIAPPLY ADD (FLASTUPDATEUSERID BIGINT DEFAULT 0 NOT NULL );