IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_SIM_ISOMERISM_BILL_DATA' AND KSQL_COL_NAME ='FSETTLE_STATUS')
    ALTER TABLE T_SIM_ISOMERISM_BILL_DATA ADD (FSETTLE_STATUS varchar(10) default '');