September 2002
Intermediate to advanced
562 pages
27h 22m
English
Content preview from Advanced SQL:1999
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312 Chapter 70LAP
Result 7.4
Moving Average of Sales over Previous Three Months
store_id month total_dvd_sales moving_avg
City 200109 46936.75 46936.75
City 200110 22842.41 34889.58
City 200111 30927.90 33569.02
City 200112 51751.03 35173.78
South 200109 20554.16 20554.16
South 200110 9418.14 14986.15
South 200111 13600.54 14524.28
South 200112 24977.81 15998.83
Web 200109 23157.55 23157.55
Web 200110 26591.08 24874.32
Web 200111 31565.37 27104.67
Web 200112 48153.39 35466.95
--This month only
mAverage of Sept. and Oct.
---Average of Sept., Oct., and Nov.
--Average of Oct., Nov., and
Dec. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.