Re: pb with join plan - Mailing list pgsql-general

From Marc Millas
Subject Re: pb with join plan
Date
Msg-id CADX_1aaVGTJiU-Fw+vsEF-iTNYxqq9fDtvw9nb_iW9zgP0Bk8Q@mail.gmail.com
Whole thread Raw
In response to Re: pb with join plan  (David Rowley <dgrowleyml@gmail.com>)
Responses Re: pb with join plan  (David Rowley <dgrowleyml@gmail.com>)
Re: pb with join plan  (Tomas Vondra <tomas.vondra@enterprisedb.com>)
List pgsql-general


On Tue, Jun 20, 2023 at 11:19 PM David Rowley <dgrowleyml@gmail.com> wrote:
On Wed, 21 Jun 2023 at 08:34, Marc Millas <marc.millas@mokadb.com> wrote:
>
> On Tue, Jun 20, 2023 at 10:14 PM David Rowley <dgrowleyml@gmail.com> wrote:
>>
>> On Wed, 21 Jun 2023 at 07:42, Marc Millas <marc.millas@mokadb.com> wrote:
>> > But if I do the same with clause one OR clause 2, I have to  kill the request after an hour, seeing the filesystem showing more than 140 Mb of increased usage.
>>
>>
> link to the anonymized plan of the req with one clause : https://explain.depesz.com/s/TWp4
link to the plan with the second clause alone: https://explain.depesz.com/s/byW5 
link to the plan with both clauses ORed (the one not finishing) https://explain.depesz.com/s/jHO2


It's quite difficult to know what the problem is you want to fix here.
Your initial post indicated it was the query with the OR condition
that was causing you the problems, but the plan you've posted has no
OR condition?!

You're more likely to get help here if you take time to properly
explain the situation and post the information that's actually
relevant to the problem you're having, or state the problem more
clearly, as there's a mismatch somewhere.

It might also be worth having a look at
https://wiki.postgresql.org/wiki/Slow_Query_Questions . EXPLAIN is not
going to tell us what part of the query is slow. I'll let the wiki
page guide you into what to do instead.
 
I know that page. obviously, as I have to kill the request, I cannot provide a explain analyze... 

David

pgsql-general by date:

Previous
From: David Rowley
Date:
Subject: Re: pb with join plan
Next
From: Atul Kumar
Date:
Subject: Re: strange behavior of .pgpass file