Fwd: [SQL] aggregate function stddev

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: pgsql-docs(at)postgresql(dot)org
Subject: Fwd: [SQL] aggregate function stddev
Date: 2004-09-09 18:38:21
Message-ID: 200409091138.21985.josh@agliodbs.com
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Folks,

Sending this remark to the list so that I/we don't forget to patch it .....

========================================
Just noticed that the postgres stddev is the stddev_sample formula.
There are two different ways to calculate this value.
Their difference is very small with large samle size. It would be nice
to distinguish the two different versions.
========================================

--
Josh Berkus
Aglio Database Solutions
San Francisco

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