create table User_Salary (UserName nvarchar(200), Month nvarchar(20), Salary int)
go
insert into User_Salary (UserName,Month,Salary ) values('AAA','2010/12',1000)
insert into User_Salary (UserName,Month,Salary ) values('AAA','2011/01',2000)
insert into User_Salary (UserName,Month,Salary ) values('AAA','2011/02',3000)
insert into User_Salary (UserName,Month,Salary ) values('BBB','2010/12',2000)
insert into User_Salary (UserName,Month,Salary ) values('BBB','2011/01',2500)
insert into User_Salary (UserName,Month,Salary ) values('BBB','2011/02',2500)
上面是原表格,想实现成(UserName相同,根据日期降序进行汇总,即汇总日期小于此行日期且UserName相同所有数据),如下图
该如何写SQL语句
SQL累加问题,根据日期降序累加
- 写回答
- 好问题 0 提建议
- 追加酬金
- 关注问题
- 邀请回答
-
2条回答 默认 最新
- danielinbiti 2015-07-18 09:29关注
select u.* ,(select SUM(salary) from User_Salary where User_Salary.Month<=u.month and User_Salary.UserName = u.userName) as 总和 from User_Salary u
本回答被题主选为最佳回答 , 对您是否有帮助呢?解决 2无用