Question

我有以下sql查询：

select Judge, ResultIndex, count(*) as CasesForJudge
from SRSIndexes
group by Judge, ResultIndex

列"Judge"和"ResultIndex"是nvarchar类型。我收到这样的输出：

Adelina Andreeva  2a           24
Adelina Andreeva  5b           33
....
Georgy Ivanov     3b           44
Georgy Ivanov     5a           5

我想为每位评委找到总和（来自"CasesForJudge"列）（例如：Adelina Andreeva -> 57，Georgy Ivanov -> 49）。我该如何修改我的查询？

Answer 1

您只需要GROUP BY Judge列

SELECT Judge, count(*) AS CasesForJudge
FROM SRSIndexes
GROUP BY Judge

Answer 2

如果你想在一个查询中两个分组，你可以尝试grouping sets：

    select Judge, 
           ResultIndex, 
           count(*) as CasesForJudge
      from SRSIndexes
  group by grouping sets ((Judge, ResultIndex), -- Initial grouping 
                          (Judge))              -- Added one

我需要特定sql查询的帮助

2 个答案: