MySql数据库字段排序规则不一致产生的一个问题

最近项目向MySql迁移,迁移完毕后,在获取用户权限时产生了一个异常,跟踪进去获取执行的语句如下,

 SELECT PermissionId   FROM spysxtPermission  WHERE (ResourceCategory = 'BaseUser'      
  AND ResourceId =  '003bf4bd072243fa90517ee2bc088cb7'       AND Enabled = 1        
 AND DeletionStateCode = 0)  UNION  SELECT PermissionId   FROM spysxtPermission        , ( SELECT RoleId   FROM spysxtUserRole 
 WHERE (UserId =  '003bf4bd072243fa90517ee2bc088cb7'        AND Enabled = 1         AND DeletionStateCode = 0 )  UNION SELECT RoleId   
FROM BaseUserRole  WHERE ( UserId =  '003bf4bd072243fa90517ee2bc088cb7'        AND Enabled = 1         AND DeletionStateCode = 0 ) ) B  
  WHERE ResourceCategory =  'spysxtRole'       
AND spysxtPermission.ResourceId = B.RoleId        AND spysxtPermission.Enabled = 1    
     AND spysxtPermission.DeletionStateCode = 0 

在Navicate执行,提示如下:

这个语句在Oracle中执行都是正常的,一时不知道是什么原因,baidu了也没找到如何处理,我将语句逐个拆开执行,最终找到问题出在这里:

 SELECT RoleId   FROM spysxtUserRole 
 WHERE (UserId =  '003bf4bd072243fa90517ee2bc088cb7' AND Enabled = 1 AND DeletionStateCode = 0 )  
UNION SELECT RoleId FROM BaseUserRole WHERE ( UserId = '003bf4bd072243fa90517ee2bc088cb7' AND Enabled = 1 AND DeletionStateCode = 0 )

看到这里,我突然想到有可能是字符集不一样造成的,打开表

 

原来问题出在排序规则上,一个是utf8_unicode_ci,一个是utf8_danish_ci。全部改为utf8_unicode_ci。问题解决!

原以为是代码bug,一直在调试代码,没想到问题出在这里。

 

posted @ 2016-04-17 10:27  三人成虎  阅读(4900)  评论(0编辑  收藏  举报