SQL Joins Answers - #1 SELECT TOP 2 P.ProductName...

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#1 SELECT TOP 2 P.ProductName, SUM(((OD.UnitPrice*(1-OD.Discount))-P.UnitCost)*OD.Quantity) AS Profit FROM OrderDetails AS OD INNER JOIN Products AS P ON OD.ProductID = P.ProductID GROUP BY P.ProductName ORDER BY SUM(((OD.UnitPrice*(1-OD.Discount))-P.UnitCost)*OD.Quantity) DESC #2 SELECT TOP 3 E.EmployeeID, O.EmployeeID, E.LastName, COUNT(O.OrderID) AS NumberOfOrders FROM Employees AS E LEFT JOIN Orders AS O ON E.EmployeeID = O.EmployeeID GROUP BY E.EmployeeID, O.EmployeeID, E.LastName ORDER BY COUNT(O.OrderID) ASC SELECT TOP 3 E.EmployeeID, O.EmployeeID, E.LastName, COUNT(O.OrderID) AS NumberOfOrders FROM Orders AS O RIGHT JOIN Employees AS E ON E.EmployeeID = O.EmployeeID GROUP BY E.EmployeeID, O.EmployeeID, E.LastName ORDER BY COUNT(O.OrderID) ASC FULL JOIN SELECT E.EmployeeID, O.EmployeeID, E.LastName, COUNT(O.OrderID) AS NumberOfOrders FROM Employees AS E LEFT JOIN Orders AS O ON E.EmployeeID = O.EmployeeID GROUP BY E.EmployeeID, O.EmployeeID, E.LastName UNION SELECT E.EmployeeID, O.EmployeeID, E.LastName, COUNT(O.OrderID) AS NumberOfOrders
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