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博客园 - Diego

MongoDb playing ground: run as service, sharding. 还是等吧 Notes for these past days: Python, Android, MongoDb, and WebLoad. One day configuring network in Ubuntu 10.4 - Diego Only if I can feel the heat from soccer- steady the first day. Finally, World Cup comes to be the evidence of my 2010. 2010 Fifa world cup time table. Performance issue, be cautious to use List.Contains... Interesting memo for i++ and ++i. Learn at least a half dozen programming languages. (extracted) System.IO.IOException: The semaphore timeout period has expired. - Diego Command to restart/shut down remotely. SVN authentication... Tip 2: Code Review Tools... to be a team. Command to check Group Policy. Exception doesn't travel across threads... Resume to be along with the technical forums. How To Get Customer's Screen Pixel. Some notes when transferring from Web 1.1 to Web 2.0
Producing function in SQL.
Diego · 2008-09-27 · via 博客园 - Diego

Missing function like Sum/ Max...

So have to use EXP(SUM(LOG(ABS(Column Name))))...

Basing on Exp(Log a + Log b) = a * b.