結合SQL Server的查詢

Question

我使用SQL Server和我有兩個表，我想結合成一個查詢，我可以用它來填充GridView控件。

表1 dbo.Work
UID（PK，INT）
Tech_Ticket（INT）
RMA_Ticket（INT）
區（nchar10）
完成（nchar10）
FA（nchar10）
代理（nvarchar50）
跟蹤（nvarchar50）
DATE_ADDED（日期）
Date_Upda泰德（日期）

表2 dbo.Orders
UID（PK，INT）
訂單（INT）
代理（nvarchar50）
票（INT）
筆記（nvarchar50）

現在我把它們設置爲兩個單獨的查詢和兩個獨立的表。

查詢1：

SELECT [Agent], 
    SUM(CASE WHEN [Date_Added] BETWEEN @startDate AND @endDate THEN 1 ELSE 0 END) AS 'New ', 
    SUM(CASE WHEN [Date_Updated] BETWEEN @startDate AND @endDate THEN 1 ELSE 0 END) AS 'Worked', 
    SUM(CASE WHEN [Completed] = 'yes' AND [Date_Updated] BETWEEN @startDate AND @endDate THEN 1 ELSE 0 END) AS 'Completed', 
    SUM(CASE WHEN [Failure_Analysis] = 'yes' AND [Date_Updated] BETWEEN @startDate AND @endDate THEN 1 ELSE 0 END) AS 'FA' 
    FROM Work 
    GROUP BY [Agent] 

QUERY2：

SELECT [Agent] 
    SUM(CASE WHEN [Date] BETWEEN @startDate AND @endDate THEN 1 ELSE 0 END) AS 'Orders' 
    FROM Orders 
    GROUP BY [Agent] 

有沒有辦法將這兩個查詢合併成一個？

Answer 1

你可以JOIN他們。假設Work是主表，它應該是這樣的：

SELECT A.*, B.Orders 
FROM ( SELECT [Agent], 
       SUM(CASE WHEN [Date_Added] BETWEEN @startDate AND @endDate THEN 1 ELSE 0 END) AS 'New', 
       SUM(CASE WHEN [Date_Updated] BETWEEN @startDate AND @endDate THEN 1 ELSE 0 END) AS 'Worked', 
       SUM(CASE WHEN [Completed] = 'yes' AND [Date_Updated] BETWEEN @startDate AND @endDate THEN 1 ELSE 0 END) AS 'Completed', 
       SUM(CASE WHEN [Failure_Analysis] = 'yes' AND [Date_Updated] BETWEEN @startDate AND @endDate THEN 1 ELSE 0 END) AS 'FA' 
     FROM Work 
     GROUP BY [Agent]) A 
LEFT JOIN (SELECT [Agent] 
        SUM(CASE WHEN [Date] BETWEEN @startDate AND @endDate THEN 1 ELSE 0 END) AS 'Orders' 
      FROM Orders 
      GROUP BY [Agent]) B 
ON A.[Agent] = B.[Agent]