From: Mark Stosberg <mark@summersault.com>
To: pgsql-performance@postgresql.org
Subject: Re: Can anyone make this code tighter? Too slow, Please help!
Date: Fri, 09 Feb 2007 16:04:31 -0500
Message-ID: <eqinlp$2vg7$1@news.hub.org> (raw)
In-Reply-To: <1171053125.039969.232070@m58g2000cwm.googlegroups.com>
References: <1171053125.039969.232070@m58g2000cwm.googlegroups.com>
shane.eckel@seattlesoftware.com wrote:
> I have this function in my C#.NET app that goes out to find the
> business units for each event and returns a string (for my report).
> I'm finding that for larger reports it takes too long and times out.
>
> Does anyone know how I can speed this process up? Is this code very
> tight or could it be cleaner? thanks in advance for your help, this
> is a big issue used on several reports.
Perhaps try "EXPLAIN ANALYZE" on this query, given a valid event ID:
SELECT Distinct Companies.Name
FROM Companies INNER JOIN
ExpenseAllocations ON Companies.ID =
ExpenseAllocations.BusinessUnitID
WHERE (ExpenseAllocations.EventID =
@EventID)
ORDER BY Companies.Name DESC
#######
Do the columns used in the join and WHERE clause have indexes?
It's also possible the optimization needs to happen at a different level. Perhaps you are frequently
looking up the same results in a large report, or throughout the day.
If this part doesn't need to be up-to-second fresh, perhaps your application could
cache some of the results of this function, instead of repeatedly asking the database
to recompute it.
Mark
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To: pgsql-performance@postgresql.org
Cc: mark@summersault.com
Subject: Re: Can anyone make this code tighter? Too slow, Please help!
In-Reply-To: <eqinlp$2vg7$1@news.hub.org>
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