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Question11: How can I list all book with prices greather than the average price of books o
Question11: How can I list all book with prices greather than the
average price of books of the same type？
In database pubs, have a table named titles , its column named price mean
the price of the book, and another named type mean the type of books.
Now I want to get the result as below:
type title price
------------
--------------------------------------------------------------------------------
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business The Busy Executive's Database
Guide 19.9900
...
...
...
...
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