如何編寫一個查詢，選擇需要的列，並從不同的表

Question

我在MVC3工作指望在這裏，我需要一些幫助，請

這裏我有一個像（錯誤ID）

錯誤ID標題描述專案編號版本的一些表BuildNumber EmployeId類別ID創建日期嚴重性ID PriorityID發行版ID類型ID

2銀行業務應用程序1新版本新建版否1 1 00:00:00。00 1 1 1 1

（項目表）

================================= ======================

Projectid ProjectName Description  Status 

1 Finance  This is Finance Project Active 
2 Uniformatic This is Finance Project Active 
3 ProDuct  This is Finance Project InActive 
4 Cloud  This is Finance Project INActive 
5 Banking  This is Finance Project Progress 

6電子商務這是融資項目活動

RealesePhase（表）

== ================================================== ================

ReleasePhaseID ReleasePhase 

1  DEV 
2  QA 
3  Alpha 
4  Beta 

5直播

Tostatus（表）

=============================== ====================

ToStatusId  Tostatus 

1  New 
2  Assigned 
3  Fixed 
4  Re-Opened 
5  Closed 
6  Deffered 

7不是錯誤

Bughistory（表）

BugHistoryID錯誤ID FixedByID AssignedTo分辨率FromStatus ToStatus

5     2   1   1  this is my banking  New   New 
7     2   1   1  this assignto res    km,l 

========================================= ================================================== ===========

這裏我有這些表現在我必須編寫一個查詢來選擇ProjectName（下拉） 和（ReleasePhase）從它（open）（closed）（fixedBy）

在Bugs表中錯誤將從它的日誌（插入），所以現在我們必須選擇項目名稱& ReleasePhase作爲下拉，如果我們選擇項目名稱，我應該得到我們對它的錯誤數（計數）

從它像 （視圖）謹此

================================ =====================================

項目名RealesePhase openBugs ClosedBugs fixedBy

    1   New   EmployeName 
       2   Assigned EmployeName 
       3   Fixed  EmployeName 
       4   Re-Opened EmployeName 

=============================================== =======================

所以PLZ幫我寫一個查詢計數和顯示Ë多少錯誤插入的員工，有多少被釋放，有多少收

在此先感謝

Answer 1

你最好使用this..and存儲過程，我認爲你需要的bug數量，按您的狀態表和Releasephase和ProjectId ..這是我看到你的問題希望它可以幫助你...

Create procedure [dbo].[ProjectReports] 
(
@ProjectID int, 
@ReleasePhaseID int 
) 
as 
begin 
select distinct projectName,ReleasePhase, 
(Select COUNT(1) from Bugs where ProjectId=a.ProjectId and ReleasePhaseID=a.ReleasePhaseID and 
bugid in (select BugID from BugHistory where [status]='New')) as Newbugs, 
(Select COUNT(1) from Bugs where ProjectId=a.ProjectId and ReleasePhaseID=a.ReleasePhaseID and 
bugid in (select BugID from BugHistory where [status]='Assigned')) as Assignedbugs, 
(Select COUNT(1) from Bugs where ProjectId=a.ProjectId and ReleasePhaseID=a.ReleasePhaseID and 
bugid in (select BugID from BugHistory where [status]='Fixed')) as Fixedbugs, 
(Select COUNT(1) from Bugs where ProjectId=a.ProjectId and ReleasePhaseID=a.ReleasePhaseID and 
bugid in (select BugID from BugHistory where [status]='Re-Opened')) as Reopenedbugs, 
(Select COUNT(1) from Bugs where ProjectId=a.ProjectId and ReleasePhaseID=a.ReleasePhaseID and 
bugid in (select BugID from BugHistory where [status]='Closed')) as Closedbugs, 
(Select COUNT(1) from Bugs where ProjectId=a.ProjectId and ReleasePhaseID=a.ReleasePhaseID and 
bugid in (select BugID from BugHistory where [status]='Deffered')) as Defferedbugs, 
(Select COUNT(1) from Bugs where ProjectId=a.ProjectId and ReleasePhaseID=a.ReleasePhaseID and 
bugid in (select BugID from BugHistory where [status]='Not a Bug')) as NotaBug 
from Bugs a 
inner join Projects p on p.ProjectId=a.ProjectId 
inner join ReleasePhase Rp on rp.ReleasePhaseID=a.ReleasePhaseID 
where a.ProjectId=@ProjectID and a.ReleasePhaseID=@ReleasePhaseID 
end