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,并按降序顺序按TotalDue排序。
SELECT *
FROM Sales.SalesOrderHeader h
INNER JOIN Sales.SalesOrderDetail d
ON d.SalesOrderId = h.SalesOrderId
以下是我尝试解决问题的两个方法,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);
我做错了什么?感谢。
更新:我从ORDER BY部分删除了逗号并设法从我的第一次尝试执行查询。但是,我得到了一个看似无穷无尽的“执行成功”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);