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使用 AdventureWorks2012 数据库,我必须更改下面的查询以选择 CustomerId 大于 500 的前 10% 订单,并按 TotalDue 降序排列订单。

 SELECT *
 FROM Sales.SalesOrderHeader h
 INNER JOIN Sales.SalesOrderDetail d 
 ON d.SalesOrderId = h.SalesOrderId

这是我解决问题的两次尝试,但都包含错误:

  Msg 156, Level 15, State 1, Line 9
  Incorrect syntax near the keyword 'DESC'.
  Msg 156, Level 15, State 1, Line 12
  Incorrect syntax near the keyword 'FROM'.

尝试 1

 SELECT *
 FROM SalesOrderHeader 
 WHERE SalesOrderID IN
 (SELECT TOP 10 PERCENT SalesOrderID 
 FROM SalesOrderDetail 
 WHERE SalesOrderID > 500
 ORDER BY TotalDue DESC);

我究竟做错了什么?谢谢。


更新:我从 ORDER BY 部分中删除了逗号,并设法从我的第一次尝试中执行查询。但是,我得到了一个看似无穷无尽的“成功执行”负载。换句话说,当我修改下面的查询时,我得到了超过 3000 个结果并计数:

    SELECT *
    FROM Sales.SalesOrderHeader 
    WHERE SalesOrderID IN
(SELECT TOP 10 PERCENT SalesOrderID 
FROM Sales.SalesOrderDetail 
WHERE CustomerID > 500
ORDER BY TotalDue DESC);
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