将 MERGE 语句的执行结果插入到另一个表中

概述将 MERGE 语句的执行结果插入到另一个表中

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USE AdventureWorks2012;GOCREATE table Production.UpdatedInventory    (ProductID INT NOT NulL,LocationID int,NewQty int,PrevIoUsQty int,CONSTRAINT PK_Inventory PRIMARY KEY CLUSTERED (ProductID,LocationID));GOINSERT INTO Production.UpdatedInventorySELECT ProductID,LocationID,NewQty,PrevIoUsQty FROM(    MERGE Production.ProductInventory AS pi     USING (SELECT ProductID,SUM(OrderQty)             FROM Sales.SalesOrderDetail AS sod            JOIN Sales.SalesOrderheader AS soh            ON sod.SalesOrderID = soh.SalesOrderID            AND soh.OrderDate BETWEEN '20030701' AND '20030731'            GROUP BY ProductID) AS src (ProductID,OrderQty)     ON pi.ProductID = src.ProductID    WHEN MATCHED AND pi.Quantity - src.OrderQty >= 0         THEN UPDATE SET pi.Quantity = pi.Quantity - src.OrderQty    WHEN MATCHED AND pi.Quantity - src.OrderQty <= 0         THEN DELETE    OUTPUT $action,Inserted.ProductID,Inserted.LocationID,Inserted.Quantity AS NewQty,Deleted.Quantity AS PrevIoUsQty) AS Changes (Action,ProductID,PrevIoUsQty) WHERE Action = 'UPDATE';GO

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总结

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