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From "Shelley L" <randomshel...@gmail.com>
Subject Aggregates
Date Wed, 21 Mar 2007 14:41:58 GMT
I need to use several aggregate functions, including most of the built-in
aggregates (count, min, max, avg, etc.) as well as some custom aggregates
(standard deviation and various percentiles).

Is there any documentation or example on how to create custom aggregate
functions?  I have found one reference [1] which only mentions that custom
aggregates can be created, but contains no other details.

(Also, are there any plans to include standard deviation or percentiles as
built-in aggregates in derby?)

[1]
http://db.apache.org/derby/docs/10.2/ref/rrefsqlj33923.html#rrefsqlj33923__sqlj92398

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