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