Execute the following Microsoft SQL Server T-SQL query in SSMS Query Analyzer to list all the order ids with order quantity in the bottom quartile:

-- SQL correlated subquery

SELECT DISTINCT o.OrderId, o.ProductID

FROM   Northwind.dbo.[Order Details] o

WHERE  Quantity <= (SELECT avg(Quantity) * .25

                    FROM   Northwind.dbo.[Order Details]

                    WHERE  o.ProductID = ProductID)

/*

OrderId     ProductID

10609 1

10700 1

10838 1

11003 1

11005 1

10851 2

10722 2

....

*/