Question

我有三个表，每个表按作业号相关：OrderHeader，OrderComponent，OrderQtyTable。此订单有五个组件，当运行此查询时，它返回25行，使用TotalPrice复制每个组件五次，为五个组件中的每一个显示五个组件中的每一个。

SELECT 
    DISTINCT TOP (100) PERCENT dbo.OrderHeader.JobNumber,
    dbo.OrderComponent.ComponentNumber AS Comp,
    dbo.OrderHeader.JobDescription,
    dbo.OrderComponent.Description,
    dbo.OrderQtyTable.Quantity,
    dbo.OrderQtyTable.TotalPrice
FROM dbo.OrderHeader
INNER JOIN dbo.OrderComponent ON dbo.OrderHeader.JobNumber = dbo.OrderComponent.JobNumber
INNER JOIN dbo.OrderQtyTable ON dbo.OrderHeader.JobNumber = dbo.OrderQtyTable.JobNumber
WHERE (dbo.OrderHeader.JobNumber = '97180'

Answer 1

将JOIN更改为OrderQty应该可以消除重复：

INNER JOIN dbo.OrderQtyTable 
ON dbo.OrderHeader.JobNumber = dbo.OrderQtyTable.JobNumber
AND dbo.OrderComponent.ComponentNumber = dbo.OrderQtyTable.ComponentNumber

SQL Query返回重复的组件记录

1 个答案: