结合SQL Server的查询

Question

我使用SQL Server和我有两个表，我想结合成一个查询，我可以用它来填充GridView控件。

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

表2 dbo.Orders
UID（PK，INT）
订单（INT）
代理（nvarchar50）
票（INT）
笔记（nvarchar50）

现在我把它们设置为两个单独的查询和两个独立的表。

查询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] 

有没有办法将这两个查询合并成一个？

Answer 1

你可以JOIN他们。假设Work是主表，它应该是这样的：

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]