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SQL question

No.127340 View ViewReplyOriginalReport
>Given the TasteTest table below:
>TasteTest(TesterID, ItemID, Rating, Date)
>The Rating column has the integer data type and contains values from 1 to 10, with 10 being the highest rating.
>Write a SQL query to retrieve all testers who have given different ratings to all of the foods they have ever rated.
I'm stumped. How do I do this? If anyone even knows what statement(s) I should be using that would be helpful even if you don't type out the full code.