合并SQL 2012中的重复行

Question

这是我的表结构我试图创建一个存储过程,它获取此信息的摘要.

Part Number  Weight    Type    
----------------------------
234           120       P     
212           45        P
234           110       P
234           100       C

具有相同零件号和类型的零件我希望合并记录并得到重量的总和,输出如下.

Part Number  Weight    Type    
----------------------------
234           230       P     
212           45        P
234           100       C

Answer 1

这只是一个简单GROUP BY的SUM():

Select  [Part Number], Sum([Weight]) As [Weight], [Type]
From    YourTable
Group By [Part Number], [Type]

如果你想成为一个STORED PROCEDURE,CREATE语法如下:

Create Procedure spGetTotalWeightsByPartAndType --Or whatever you want to name it
As Begin
    Select  [Part Number], Sum([Weight]) As [Weight], [Type]
    From    YourTable
    Group By [Part Number], [Type]
End