From: | "Joel Fradkin" <jfradkin(at)wazagua(dot)com> |
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To: | "'T- Bone'" <jbowen333(at)hotmail(dot)com>, <dev(at)archonet(dot)com> |
Cc: | <pgsql-sql(at)postgresql(dot)org> |
Subject: | Re: Comments on subquery performance |
Date: | 2005-02-18 18:44:18 |
Message-ID: | 000001c515e9$db144870$797ba8c0@jfradkin |
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Thread: | |
Lists: | pgsql-sql |
Yea we examined it here as a group as we are facing the same kind of stuff
and found exactly the same thing.
It does what MSSQL called a Cartesian join, and ran no faster other then
removing the outer join logic.
Using a regular join statement and only inner joins was the same speed and I
think little less confusing when you have several joins as our system does.
We may have to look at re-engineering our system as the original design has
dozens of table whith a field set like ID, Value to hold stuff like
apprehension type, jobtitle etc. So we hold a main record with dozens of
id's (and joins when reporting).
Joel Fradkin
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