From: | hmidi slim <hmidi(dot)slim2(at)gmail(dot)com> |
---|---|
To: | Luca Ferrari <fluca1978(at)infinito(dot)it> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Buffers option |
Date: | 2017-11-24 14:48:48 |
Message-ID: | CAMsqVxta9+6js_SWt5LJkDHi+f3FfgPfQYJ_8-ytgbZeyLVSVg@mail.gmail.com |
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Lists: | pgsql-general |
with this query:
explain (ANALYZE,BUFFERS) SELECT p.*FROM place as p, user as u where
p.id = u.place_id
and to_tsvector('simple', p.name) @@ to_tsquery('simple', 'a:*') and
u.status = true;
I got the buffers.I think that is not working with JOIN INNER.
2017-11-24 13:46 GMT+01:00 Luca Ferrari <fluca1978(at)infinito(dot)it>:
> On Fri, Nov 24, 2017 at 12:30 PM, hmidi slim <hmidi(dot)slim2(at)gmail(dot)com>
> wrote:
> > I didn't get the number of read and hit buffers when I rexecute the query
> > many times.How can I Fix that? and I tried the options costs, timing and
> I
> > got the same plan query however when trying the option format json it
> works.
>
>
> Not sure but I see a lot of nodes 'never executed' and 'rows=0' on the
> first loop. Could it be the optimzer did not execute nothing at all?
>
> Luca
>
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