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By matrixres
via blog.matrixresources.com
Published: Jan 18 2012 / 06:14

I'm going to show you the 5 most common ways you'll be asked to summarize data: COUNT, SUM, MAX, MIN,and AVG (Average). There are several more that SQL understands, and once you learn to define your own functions, there will be an infinite number of ways to summarize that data. I just want you to gain an understanding of the basics, so you can go on to all those other methods.
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