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help / color / mirror / Atom feedFrom: Josh Berkus <[email protected]>
To: [email protected]
Subject: Fwd: [SQL] aggregate function stddev
Date: Thu, 9 Sep 2004 11:38:21 -0700
Message-ID: <[email protected]> (raw)
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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