From: Tom Lane <tgl@sss.pgh.pa.us>
To: Παρασκευη Πασσαρη <passari.paraskevi@gmail.com>
Cc: pgsql-performance@lists.postgresql.org
Subject: Re: Performance issues in query with multiple joins
Date: Fri, 28 Apr 2023 10:07:47 -0400
Message-ID: <1339836.1682690867@sss.pgh.pa.us> (raw)
In-Reply-To: <CAKcH_XZNmmquh2w8oGtRyT+HyrEeodayaBd1QvcgmR69i=hN0A@mail.gmail.com>
References: <CAKcH_XZNmmquh2w8oGtRyT+HyrEeodayaBd1QvcgmR69i=hN0A@mail.gmail.com>
=?UTF-8?B?zqDOsc+BzrHPg866zrXPhc63IM6gzrHPg8+DzrHPgc63?= <passari.paraskevi@gmail.com> writes:
> We are facing a performance issue with the following query. Executing this
> query takes about 20 seconds.
Raising join_collapse_limit (to more than the number of joins in
the query) might help. But I think really if performance is a
problem you should think about ditching the star schema design.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, passari.paraskevi@gmail.com, pgsql-performance@lists.postgresql.org
Subject: Re: Performance issues in query with multiple joins
In-Reply-To: <1339836.1682690867@sss.pgh.pa.us>
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