sql语句,该怎么解决

sql语句

SQL code

SELECT COUNT( CASE WHEN month(login.cLoginTime)="1" THEN `user`.strGuid END) 一月,COUNT( CASE WHEN month(login.cLoginTime)="2" THEN `user`.strGuid END) 二月,COUNT( CASE WHEN month(login.cLoginTime)="3" THEN `user`.strGuid END) 三月FROM aocslogininfo login, aocsuserinfo `user`,aocssiteinfo siteWHERE `user`.strGuid=login.strUserGuid AND site.strGuid=`user`.strGuidForSiteInfo /*AND DATE(login.cLoginTime )NOT IN (SELECT DATE(holiday) FROM holiday )*/GROUP BY site.strDistrict,count( case when month(login.cLoginTime)="12" then `user`.strGuid end) 十二月FROM aocslogininfo login, aocsuserinfo `user`,aocssiteinfo siteWHERE `user`.strGuid=login.strUserGuid AND site.strGuid=`user`.strGuidForSiteInfo /*AND DATE(login.cLoginTime )NOT IN (SELECT DATE(holiday) FROM holiday )*/GROUP BY site.strDistrict

求解决 当某个人某天多次签到的时候 这个sql语句统计签到次数的时候 会把多次签到的次数也算进去 求解决 怎么才能不把多次签到的次数统计进去

[解决办法]
建议提供测试用例之前，先自己动手测试一下，然后再贴出。

引用

mysql> insert into `aocslogininfo`(`key`,`strGuid`,`strUserGuid`,`strUserName`,
`cLoginTime`,`eSyncType`,`iState`) values (1,'c111','b11','C111','2012-01-17 00:
12:00',NULL,NULL),(2,'c112','b11','C112','2012-01-17 00:23:14',NULL,NULL),(3,'c1
21','b12','C121','2012-02-17 00:00:01',NULL,NULL),(4,'c122','b12','C122','2012-0
2-17 00:00:02',NULL,NULL),(7,'c221','b22','C221','2012-02-17 00:00:05',NULL,NULL
),(8,'c222','b22','C222','2012-02-17 00:00:06',NULL,NULL),(9,'c321','b32','C321'
,'2012-02-17 00:00:09',NULL,NULL),(10,'c322','b32','C322','2012-02-17 00:00:12',
NULL,NULL),(11,'c211','b21','C211','2012-03-17 00:00:03',NULL,NULL),(12,'c212','
b21','C212','2012-03-17 00:00:04',NULL,NULL),(13,'c311','b31','C311','2012-04-17
00:00:07',NULL,NULL),(14,'c312','b31','C312','2012-04-17 00:00:08',NULL,NULL);
ERROR 1054 (42S22): Unknown column 'eSyncType' in 'field list'
mysql>