IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_ER_APPLYPAYBILLENTRY' AND KSQL_COL_NAME ='FWBSRCBILLTYPE')
ALTER TABLE T_ER_APPLYPAYBILLENTRY ADD (FWBSRCBILLTYPE VARCHAR(50) DEFAULT ' ' NOT NULL);