Question

我有两个使用UNION组合的选择查询。我在一列中得到两个结果，但我想在两列中得到它

(SELECT count (*) As ServiceCreatedInOneMonth FROM [workAiderWinNe].[DynamicServiceDataOfClient] WHERE CreateDate > DATEADD(month, -1, GETDATE()) and  CompanyID = 1 ) UNION ALL

(SELECT count (*) As ServiceCompletedInOneMonth FROM [workAiderWinNe].[DynamicServiceDataOfClient] WHERE CreateDate > DATEADD(month, -1, GETDATE()) AND IsCompleted =1 and CompanyID = 1)

Answer 1

您可以将其简化为一个选择查询。使用CASE WHEN检查IsCompleted

SELECT count (*) As ServiceCreatedInOneMonth,
       sum (case when IsCompleted = 1 then 1 else 0 end) As ServiceCompletedInOneMonth 
FROM   [workAiderWinNe].[DynamicServiceDataOfClient] 
WHERE  CreateDate > DATEADD(month, -1, GETDATE()) 
and    CompanyID = 1

Answer 2

使用子查询：

SELECT
(SELECT count (*) 
 FROM [workAiderWinNe].[DynamicServiceDataOfClient] 
 WHERE CreateDate > DATEADD(month, -1, GETDATE()) 
 AND CompanyID = 1 ) ServiceCreatedInOneMonth ,
(SELECT count (*) 
 FROM [workAiderWinNe].[DynamicServiceDataOfClient]
 WHERE CreateDate > DATEADD(month, -1, GETDATE()) 
 AND IsCompleted =1 and CompanyID = 1) ServiceCompletedInOneMonth

Answer 3

一个选择是将null as ServiceCompletedInOneMonth添加为第一个查询的第二列， null as ServiceCreatedInOneMonth作为第二个查询的第一列，然后合并。请注意，并不需要用括号括起来：

    SELECT count (*) As ServiceCreatedInOneMonth,null as ServiceCompletedInOneMonth
    FROM [workAiderWinNe].[DynamicServiceDataOfClient] 
    WHERE CreateDate > DATEADD(month, -1, GETDATE()) and  CompanyID = 1 
UNION ALL
    SELECT null as ServiceCreatedInOneMonth,count (*) As ServiceCompletedInOneMonth 
    FROM [workAiderWinNe].[DynamicServiceDataOfClient] 
    WHERE CreateDate > DATEADD(month, -1, GETDATE()) AND IsCompleted =1 and CompanyID = 1

注意：我编写此代码时没有检查查询。松鼠的答案是最好的。

我有两个选择查询结合使用UNION。我在一列中得到两个结果如何在两列中得到它

3 个答案: