每行將SQL中的總值相加

Question

在SQL Server 2014中，我嘗試像這樣計算每游戲每行的值：

有人知道這是否可行嗎？

Answer 1

您可以使用累計總和：

select [Order], Game, Points,
       sum(Points) over (partition by Game order by  [Order]) as CumePoints
from t;

您應該避免為表或列名稱使用保留的單詞和關鍵字。 換句話說， Order是列名的壞名字，因為它需要被轉義。

Answer 2

如果您在T-SQL中執行此操作，這就是我會執行的操作

if object_ID('tempdb..#Temp') IS NOT NULL drop table #Temp

create table #Temp (id int, Game nvarchar(100), Points int)

insert into #Temp (id, Game, Points)
values
(1, 'A', 1),
(2, 'A', 2),
(3, 'B', 5),
(4, 'B', 5),
(5, 'C', 4),
(6, 'C', 8)

select id, 
   Game, 
   Points, 
   SUM(Points) over (partition by Game order by id) 
from #Temp

Answer 3

一個舊的解決方案是使用這樣的查詢：

SELECT 
    t1.id, t1.Game, t1.Points, SUM(t2.Points) [Points (Add)]
FROM 
    yourTable t1 JOIN
    yourTable t2 ON t1.Game = t2.Game AND t1.id >= t2.id
GROUP BY 
    t1.id, t1.Game, t1.Points