Answers for "CROSS APPLY"

SQL
0

userdefined function cross apply all days into the future sql

USE Northwind	
GO

SELECT o1.OrderID, o1.OrderDate, ca.OrderID AS NextOrder, 
		ca.OrderDate AS NextOrderDate, CustomerID, 
			DATEDIFF(DAY, o1.OrderDate,ca.OrderDate) DaysToNextOrder
FROM Orders AS o1
	CROSS APPLY
			(SELECT TOP 1 o.OrderDate, o.OrderID
			 FROM Orders AS o 
                         WHERE o.customerID = o1.customerID
				AND o.OrderID > o1.OrderID
			 ORDER BY OrderID) AS ca

ORDER BY CustomerID, o1.OrderID
Posted by: Guest on August-14-2020

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