April 2012
Intermediate to advanced
244 pages
6h 33m
English
Content preview from Microsoft® SQL Server® 2012 High-Performance T-SQL Using Window FunctionsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Introduction
Window functions, to me, are the most profound feature supported by both standard SQL and Microsoft SQL Server’s dialect—T-SQL. They allow you to perform calculations against sets of rows in a flexible, clear, and efficient manner. The design of window functions is ingenious, overcoming a number of shortcomings of the traditional alternatives. The range of problems that window functions help solve is so wide that it is well worth investing your time in learning those. SQL Server 2005 was the version in which window functions were introduced initially. SQL Server 2012 then added more complete support by enhancing some of the existing functions, as well as adding new ones. This book covers both the SQL Server–specific support for window ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.