查詢表中兩個條件下的數目，按三列組成表

查詢表中兩個條件下的數目，按三列組成表。

SELECT BatchID,GroupProjectsID,count(*)
  FROM [dbo].[BasicProjectsInfo]
  Where BatchID=201408 and GroupProjectsID=2

報錯：

消息 8120，級別 16，狀態 1，第 4 行

選擇列表中的列 'dbo.BasicProjectsInfo.BatchID' 無效，因爲該列沒有包含在聚合函數或 GROUP BY 子句中。

select BatchID, GroupProjectsID, count(*) from [dbo].[BasicProjectsInfo]
   group by BatchID, GroupProjectsID  having BatchID='201408' and GroupProjectsID='2';

select BatchID, GroupProjectsID, count(*) from [dbo].[BasicProjectsInfo]
   group by BatchID, GroupProjectsID 

添加 As 可以重命名列

select BatchID, GroupProjectsID, count(*) AS Cout from [dbo].[BasicProjectsInfo]
   group by BatchID, GroupProjectsID