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Category > Engineering Posted 16 Oct 2017 My Price 10.00

Substitute a subquery in a WHERE clause for the inner join.

1. A SELECT statement that returns the same result set as this SELECT statement. Substitute a subquery in a WHERE clause for the inner join.

SELECT DISTINCT VendorName

FROM Vendors JOIN Invoices

       ON Vendors.VendorID = Invoices.VendorID

ORDER BY VendorName;

 

2. A SELECT statement that answers this question: Which invoices have a PaymentTotal that's greater than the average PaymentTotal for all paid invoices? Return the InvoiceNumber and InvoiceTotal for each invoice.

 

3. A SELECT statement that answers this question: Which invoices have a PaymentTotal that's greater than the median PaymentTotal for all paid invoices? (The median marks the midpoint in a set of values; an equal number of values lie above and below it.) Return the InvoiceNumber and InvoiceTotal for each invoice.

 

4. A SELECT statement that returns two columns from the GLAccounts table: AccountNo and AccountDescription. The result set should have one row for each account number that has never been used. Use a correlated subquery introduced with the NOT EXISTS operator. Sort the final result set by AccountNo. 

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SophiaPretty
(5)
Status NEW Posted 16 Oct 2017 01:10 PM My Price 10.00

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