IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_RIM_INV_AIR' AND KSQL_COL_NAME ='FINTERNATIONAL_FLAG')
 ALTER TABLE T_RIM_INV_AIR ADD (FINTERNATIONAL_FLAG NVARCHAR(2) DEFAULT ' ' NOT NULL );