sql语句导致PageHelper插件报错的bug

resources/mapper/modules/verify/AirlineVerifyDao.xml

@@ -484,8 +484,9 @@ union (SELECT 	apply_no,create_time AS create_date
             ELSE p.airport_name
             END depName,
             r.city_name AS arrName,            
-        	verif_status AS verifStatus, 
-        	IF(back_status!='0','2',frv.status) AS status,
+        	verif_status AS verifStatus,
+			CASE WHEN back_status != '0' THEN '2'
+			ELSE frv.status END status,
         	verif_type AS verifType, 
         	fav.start_time AS sailingDate, 
         	DATE_FORMAT(fav.create_date, '%Y-%m-%d') AS createDate