Usar GROUP BY con varios grupos
USE AdventureWorks2012;
GO
SELECT ProductID, SpecialOfferID, AVG(UnitPrice) AS [Average Price],
SUM(LineTotal) AS SubTotal
FROM Sales.SalesOrderDetail
GROUP BY ProductID, SpecialOfferID
ORDER BY ProductID;
GOUsar GROUP BY con varios grupos
USE AdventureWorks2012;
GO
SELECT ProductID, SpecialOfferID, AVG(UnitPrice) AS [Average Price],
SUM(LineTotal) AS SubTotal
FROM Sales.SalesOrderDetail
GROUP BY ProductID, SpecialOfferID
ORDER BY ProductID;
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