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