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SQL Procedures

Posted on 2009-05-09
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Last Modified: 2012-05-06
I have the following problem that I am to answer. Any idea

Write a procedure that takes 5% off of the list price of all of the books that were written by the author who sold the most books in the previous month.  If, for example, the current month is October when the procedure is invoked, it would find the author who sold the most books in September and then discount all of that authors books by 5%



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Question by:iolike
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Aneesh Retnakaran earned 500 total points
ID: 24346630

create procedure updFivePercentage
as
UPDATE Book
SET SoldPrice = 0.95 * SoldPrice
WHERE AuthorID = (SELECT TOP 1  AuthorID
                  FROM SalesTable
                  WHERE Month (SalesDate) = MONTH(GETDATE() ) -1  
                  GROUP BY AuthorID
                  ORDER BY COUNT(*) DESC
                  )
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by:iolike
ID: 31579849
Thanks
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