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Week numbers and calculating weekly statistics/diagrams - Mailing list pgsql-general

From Alexander Farber
Subject Week numbers and calculating weekly statistics/diagrams
Date
Msg-id 943abd911002160414y1949b13apa0a29eecfbd62fc3@mail.gmail.com
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Responses Re: Week numbers and calculating weekly statistics/diagrams  (Martijn van Oosterhout <kleptog@svana.org>)
Re: Week numbers and calculating weekly statistics/diagrams  (Greg Smith <greg@2ndquadrant.com>)
Re: Week numbers and calculating weekly statistics/diagrams  (Thom Brown <thombrown@gmail.com>)
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Hello,

I have multiplayer card game in Flash/Perl/C and would
like to add weekly tournaments/player ratings to it.

This means I have to add a table which holds:
player id, weekly score (which I update after each round)
and the week number.

Does anybody has an advice how to save the week number?

If I save it as a timestamp then calculating realtime statistics
(on a player profile click) will probably be CPU-intensive,
because I have to calculate the week numbers each time.

If I save it as string "2010/52" then it's difficult to show
statistics for a period of time (like for the last 12 months)
if there is a new year inbetween.

Maybe there is a better way?

I'm using postgresql-server-8.3.6 and OpenBSD 4.5

Regards
Alex

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