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From: Tom Lane <tgl@sss.pgh.pa.us>
To: =?iso-8859-9?Q?Yavuz_Selim_Serto=F0lu_=28ETIYA=29?=
 <yavuz.sertoglu@etiya.com>
cc: "pgsql-performance@lists.postgresql.org"
 <pgsql-performance@lists.postgresql.org>
Subject: Re: Query slows when used with view
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Comments: In-reply-to =?iso-8859-9?Q?Yavuz_Selim_Serto=F0lu_=28ETIYA=29?=
 <yavuz.sertoglu@etiya.com>
	message dated "Wed, 09 Oct 2019 12:31:40 -0000"
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=3D?iso-8859-9?Q?Yavuz_Selim_Serto=3DF0lu_=3D28ETIYA=3D29?=3D <yavuz.serto=
glu@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 t=
his 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