
IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_IM_MDC_OMCMPLINBILL' AND KSQL_COL_NAME ='FISVIRTUALBILL') 
 ALTER TABLE T_IM_MDC_OMCMPLINBILL ADD (FISVIRTUALBILL CHAR(1) DEFAULT '0' NOT NULL );