SQL Server 2008 筛选

Question

我正在将来自同一个数据库的 4 个表连接在一起。我的查询正在返回我所追求的数据，但也为某些记录返回多行。我只想要每个 WKO_WorkOrderID 具有最新 LastReportedHrsDate 的行。有人可以帮我提供正确的过滤代码吗？

代码（我对 SQL 还是很陌生..）：

SELECT     dbo.PLT.PLT_ItemID, SUM(dbo.PLD.PLD_IssueQty) AS Issued, dbo.WKO.WKO_WorkOrderID, dbo.WKO.WKO_RequiredQty, dbo.WKO.WKO_CompleteQty, 
                      dbo.WKO.WKO_RequiredQty - dbo.WKO.WKO_CompleteQty AS openbalance, dbo.PLT.PLT_QtyPerAssy, 
                      (dbo.WKO.WKO_CompleteQty * dbo.PLT.PLT_QtyPerAssy - SUM(dbo.PLD.PLD_IssueQty)) * - 1 AS WIP, dbo.WKO.WKO_ItemID, dbo.WOO.WOO_StatusCode, 
                      dbo.WOO.WOO_LastReportedHrsDate, dbo.WOO.WOO_WorkCenterID
FROM         dbo.PLT INNER JOIN
                      dbo.PLD ON dbo.PLT.PLT_RecordID = dbo.PLD.PLD_PLT_RecordID INNER JOIN
                      dbo.WKO ON dbo.PLT.PLT_WorkOrderID = dbo.WKO.WKO_WorkOrderID LEFT OUTER JOIN
                      dbo.WOO ON dbo.PLT.PLT_WorkOrderID = dbo.WOO.WOO_WorkOrderID
WHERE     (dbo.WKO.WKO_StatusCode = N'Released') AND (dbo.PLT.PLT_ItemID = '9005-20-1794')
GROUP BY dbo.PLT.PLT_ItemID, dbo.WKO.WKO_WorkOrderID, dbo.WKO.WKO_RequiredQty, dbo.WKO.WKO_CompleteQty, dbo.PLT.PLT_QtyPerAssy, dbo.WKO.WKO_ItemID, 
                      dbo.WOO.WOO_StatusCode, dbo.WOO.WOO_LastReportedHrsDate, dbo.WOO.WOO_WorkCenterID
HAVING      (SUM(dbo.PLD.PLD_IssueQty) = dbo.WKO.WKO_RequiredQty * dbo.PLT.PLT_QtyPerAssy) AND (dbo.WOO.WOO_LastReportedHrsDate IS NOT NULL) AND 
                      (dbo.WOO.WOO_StatusCode IS NOT NULL)
ORDER BY dbo.WKO.WKO_WorkOrderID

无法发布我的结果图片

Answer 1

请试试这个：

SELECT      max(dbo.WOO.WOO_LastReportedHrsDate),dbo.PLT.PLT_ItemID, SUM(dbo.PLD.PLD_IssueQty) AS Issued, dbo.WKO.WKO_WorkOrderID, dbo.WKO.WKO_RequiredQty, dbo.WKO.WKO_CompleteQty, 
                      dbo.WKO.WKO_RequiredQty - dbo.WKO.WKO_CompleteQty AS openbalance, dbo.PLT.PLT_QtyPerAssy, 
                      (dbo.WKO.WKO_CompleteQty * dbo.PLT.PLT_QtyPerAssy - SUM(dbo.PLD.PLD_IssueQty)) * - 1 AS WIP, dbo.WKO.WKO_ItemID, dbo.WOO.WOO_StatusCode, 
                      dbo.WOO.WOO_WorkCenterID
FROM         dbo.PLT INNER JOIN
                      dbo.PLD ON dbo.PLT.PLT_RecordID = dbo.PLD.PLD_PLT_RecordID INNER JOIN
                      dbo.WKO ON dbo.PLT.PLT_WorkOrderID = dbo.WKO.WKO_WorkOrderID LEFT OUTER JOIN
                      dbo.WOO ON dbo.PLT.PLT_WorkOrderID = dbo.WOO.WOO_WorkOrderID
WHERE     (dbo.WKO.WKO_StatusCode = N'Released') AND (dbo.PLT.PLT_ItemID = '9005-20-1794')
AND (dbo.WOO.WOO_LastReportedHrsDate IS NOT NULL) AND (dbo.WOO.WOO_StatusCode IS NOT NULL)
GROUP BY dbo.PLT.PLT_ItemID, dbo.WKO.WKO_WorkOrderID, dbo.WKO.WKO_RequiredQty, dbo.WKO.WKO_CompleteQty, dbo.PLT.PLT_QtyPerAssy, dbo.WKO.WKO_ItemID, 
                      dbo.WOO.WOO_StatusCode, dbo.WOO.WOO_WorkCenterID
HAVING      (SUM(dbo.PLD.PLD_IssueQty) = dbo.WKO.WKO_RequiredQty * dbo.PLT.PLT_QtyPerAssy) 
ORDER BY dbo.WKO.WKO_WorkOrderID