Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!
SELECT filename, rating, (SELECT SUM(rating) AS Expr1 FROM mytable AS GV WHERE GV.filename = a.filename) AS ratingsum, (SELECT COUNT(*) AS Expr2 FROM mytable AS GV WHERE GV.filename = a.filename) AS filenamecount, (SELECT COALESCE(ratingsum,1) / COALESCE(filenamecount,1)) as divnumber FROM mytable AS a
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