| From: | Richi Plana <richip(at)mozcom(dot)com> |
|---|---|
| To: | pgsql-sql(at)hub(dot)org |
| Subject: | Finding strange patters |
| Date: | 1999-04-01 00:57:54 |
| Message-ID: | Pine.LNX.4.04.9904010852380.12452-100000@jaguar.mozcom.com |
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| Thread: | |
| Lists: | pgsql-sql |
Hi,
Given a table A(name char(20), value float), is it possible to select a
tuples whose value varies by a certain amount from the average of all
values with same names? ie.
SELECT name AS tempname, value FROM A WHERE value/(SELECT AVG(value) FROM
A WHERE name = tempname) > 0.75;
L L Richi Plana 8^) ,-,-. ,-,-. ,-,-. ,-,-. ,-
LL LL Systems Administrator / / \ \ / / \ \ / / \ \ / / \ \ / /
LLLLL Mosaic Communications, Inc. \ \ / / \ \ / / \ \ / / \ \ / /
LLLLL mailto:richip(at)mozcom(dot)com `-'-' `-'-' `-'-' `-'-'
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