Retrieving multiple rows in SQL Server but distinct filtering only on one

Posted by Nicklas on Stack Overflow See other posts from Stack Overflow or by Nicklas
Published on 2010-05-11T14:55:03Z Indexed on 2010/05/11 15:14 UTC
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I have this:

SELECT Product.ProductID, Product.Name, Product.GroupID, Product.GradeID,
       AVG(tblReview.Grade) AS Grade
FROM   Product left Join tblReview ON Product.GroupID = tblReview.GroupID
WHERE  (Product.CategoryID = @CategoryID)
GROUP  BY Product.ProductID, Product.Name, Product.GroupID, Product.GradeID

I would like to return only the rows where Product.Name is unique. If I make a SELECT DISTINCT the ProductID is different on every row so all the rows are unique.

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