An easy question yet hard for me

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An easy question yet hard for me

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Manticure
Starting Member

5 Posts

Posted - 2008-09-26 : 01:27:58

Basically I am kinda lost right now. I can do basica queries but I got stuck on this question:
Consider the following tables:

Customer (CustNo, CustFirstName, CustLastName, CustStreet, CustCity, CustState, CustZip, CustBal)

Employee (EmpNo, EmpFirstName, EmpLastName, EmpPhone, EmpEmail, SupEmpNo, EmpCommRate)

Product (ProdNo, ProdName, ProdMfg, ProdQOH, ProdPrice, ProdNextShipDate)

OrderTbl (OrdNo, OrdDate, CustNo, EmpNo, ShpName, ShpStreet, ShpCity, ShpState, ShpZip)

OrdProd (OrdNo, ProdNo, Qty)

List the average balance and number of customers by city. Only include customers residing in Washington state ('WA'). Eliminate cities in the result with less than two customers in the city.

I dont have much of a clue how to do that, all I came up with is this for a start:


SELECT   CustBal
FROM     Customer
    AVG(CustBal)
    INNER JOIN OrdProd
        ON Product.ProdNo = OrdProd.ProdNo
    INNER JOIN OrderTbl
        ON OrdProd.OrdNo = OrderTbl.OrdNo
    INNER JOIN Customer
        ON OrderTbl.CustNo = Customer.CustNo
WHERE	CustState = 'WA
	AND COUNT(CustCity) > 1;

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2008-09-26 : 01:33:14

[code]SELECT CustCity,COUNT(CustNo) AS CustCount,AVG(CustBal) AS AvgCustBal
FROM Customer
WHERE CustState='WA'
GROUP BY CustCity
HAVING COUNT(CustNo)>=2[/code]

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