IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_ER_COSTESTIMATEBILL' AND KSQL_COL_NAME ='FRELATEDBIZ')
 ALTER TABLE T_ER_COSTESTIMATEBILL ADD (FRELATEDBIZ VARCHAR(30) DEFAULT 'biztype_other' NOT NULL );