TSQL Challenge 83 - Compare rows in the same table and group the data

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Published on Mon, 08 Oct 2012 06:00:00 UT Indexed on 2012/10/15 21:45 UTC
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The challenge is to compare the data of the rows and group the input data. The data needs to be grouped based on the Product ID, Date, TotalLines, LinesOutOfService.

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