SqlServer2008实例08使用APPLY来为每行调用表值函数

目录

1.使用CROSS APPLY

2.使用OUTER APPLY

---

1.使用CROSS APPLY

CREATE FUNCTION dbo.fn_WorkOrderRouting

use adventureworks
go

CREATE FUNCTION dbo.fn_WorkOrderRouting
	(@WorkOrderID int) RETURNS TABLE
AS 
RETURN 
	SELECT WorkOrderID,
	       ProductID,
	       OperationSequence,
	       LocationID
	FROM Production.WorkOrderRouting
	WHERE WorkOrderID=@WorkOrderID
GO	

SELECT w.WorkOrderID,
       w.OrderQty,
       r.ProductID,
       r.OperationSequence
FROM Production.WorkOrder w
	CROSS APPLY dbo.fn_WorkOrderRouting(w.WorkOrderID) as r
ORDER BY w.WorkOrderID,w.OrderQty,r.ProductID

2.使用OUTER APPLY

use adventureworks
go

INSERT INTO [AdventureWorks].[Production].[WorkOrder]
			([ProductID]
			,[OrderQty]
			,[ScrappedQty]
			,[StartDate]
			,[EndDate]
			,[DueDate]
			,[ScrapReasonID]
			,[ModifiedDate]
			)
	  VALUES
			(1
			,1
			,1
			,GETDATE()
			,GETDATE()
			,GETDATE()
			,1
			,GETDATE()
			)
go
SELECT w.WorkOrderID,
       w.OrderQty,
       r.ProductID,
       r.OperationSequence
FROM Production.WorkOrder as w
OUTER APPLY dbo.fn_WorkOrderRouting(w.WorkOrderID) as r
WHERE w.WorkOrderID IN
      (SELECT MAX(WorkOrderID)
       FROM Production.WorkOrder)