IF NOT EXISTS (SELECT 1 FROM KSQL_USERCOLUMNS WHERE KSQL_COL_TABNAME = 'T_ER_REIMBURSELEVEL_L' AND KSQL_COL_NAME ='FDESCRIPTION') 
 ALTER TABLE T_ER_REIMBURSELEVEL_L ADD (FDESCRIPTION NVARCHAR(255) DEFAULT ' ' NOT NULL );
 
 
 