这是我的sql数据。
ProductID id SQFeet Stock
---------------
3 1 2400 10
17 2 1500 20
6 3 1000 15
17 4 3000 5
6 4 2000 34
但代码和名称有重复的值 我想把每个重复的字段加起来。就像这样
ProductID id SQFeet Stock
---------------
3 id 2400 10
17 id 4500 25
6 id 3000 49
我试过了
select ProductID, id, SUM(SQFeet) as SQ, SUM(Stock) as Stock from tbl_FactoryStock
GROUP BY ProductID, id
但对于多个分组的列来说是行不通的 如果我只用一个分组的列就可以了 就像这样。
//This works fine
select ProductID, SUM(SQFeet) as SQ, SUM(Stock) as Stock from tbl_FactoryStock
GROUP BY ProductID
但是当我用它来进行多列分组的时候,它就不工作了。
如何实现多列多组的目标?
DECLARE @T TABLE(
CODE INT ,
NAME VARCHAR(MAX),
TOTAL INT)
INSERT INTO @T VALUES(3,'SPRITE',2400)
INSERT INTO @T VALUES(17,'COKE',1500)
INSERT INTO @T VALUES(6 ,'DEW ',1000)
INSERT INTO @T VALUES(17,'COKE',3000)
INSERT INTO @T VALUES(6 ,'DEW ',2000)
SELECT CODE,NAME,SUM(TOTAL) AS TOTAL
FROM @T
GROUP BY CODE,NAME