From: Tom Lane <tgl@sss.pgh.pa.us>
To: Yavuz Selim Sertoðlu (ETIYA) <yavuz.sertoglu@etiya.com>
Cc: pgsql-performance@lists.postgresql.org <pgsql-performance@lists.postgresql.org>
Subject: Re: Query slows when used with view
Date: Wed, 09 Oct 2019 09:57:01 -0400
Message-ID: <20080.1570629421@sss.pgh.pa.us> (raw)
In-Reply-To: <AM6PR01MB4817E28570A83C86BED9B05C9B950@AM6PR01MB4817.eurprd01.prod.exchangelabs.com>
References: <AM6PR01MB4817E28570A83C86BED9B05C9B950@AM6PR01MB4817.eurprd01.prod.exchangelabs.com>
=?iso-8859-9?Q?Yavuz_Selim_Serto=F0lu_=28ETIYA=29?= <yavuz.sertoglu@etiya.com> writes:
> I have a problem with views. When I use view in my query it really slows down(1.7seconds)
> If I use inside of view and add conditions and joins to it, it is really fast(0.7 milliseconds).
> I have no distinct/group/partition by in view so I have no idea why is this happening.
> I wrote queries and plans below.
Those are not equivalent queries. Read up on the syntax of FROM;
particularly, that JOIN binds more tightly than comma.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, yavuz.sertoglu@etiya.com, pgsql-performance@lists.postgresql.org
Subject: Re: Query slows when used with view
In-Reply-To: <20080.1570629421@sss.pgh.pa.us>
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