: Saturday, July 02, 2016 6:28 AM
To: Sfiligoi, Igor
Cc: pgsql-general@postgresql.org
Subject: Re: --EXTERNAL--Re: [GENERAL] PSQL does not remove obvious useless
joins
On Fri, Jul 1, 2016 at 7:15 PM, Sfiligoi, Igor wrote:
> OK. Will change our query generation code to not use the view.
> (I have
On Fri, Jul 1, 2016 at 7:15 PM, Sfiligoi, Igor wrote:
> OK. Will change our query generation code to not use the view.
> (I have tried the LEFT JOIN approach, but it just does not seem to perform.)
> PS: Here are the numbers for the real production query (will not provide
> details):
> Original
-general@postgresql.org
Subject: Re: --EXTERNAL--Re: [GENERAL] PSQL does not remove obvious useless
joins
On Fri, Jul 1, 2016 at 3:33 PM, Sfiligoi, Igor wrote:
> No, I don't want to use LEFT JOINS.
> I want to use regular joins.
>
> But (as mentioned in my other follow-up), all t
On Fri, Jul 1, 2016 at 3:33 PM, Sfiligoi, Igor wrote:
> No, I don't want to use LEFT JOINS.
> I want to use regular joins.
>
> But (as mentioned in my other follow-up), all the fields are not
> null (was not in the original email, sorry), and are foreign
> keys, so it is guaranteed to always match
com]
Sent: Friday, July 01, 2016 1:38 PM
To: Sfiligoi, Igor ; Merlin Moncure
Cc: pgsql-general@postgresql.org
Subject: Re: --EXTERNAL--Re: [GENERAL] PSQL does not remove obvious useless
joins
On 07/01/2016 01:28 PM, Sfiligoi, Igor wrote:
> Sorry... the example was incomplete.
>
> Al
12:42 PM
To: Sfiligoi, Igor
Cc: pgsql-general@postgresql.org
Subject: --EXTERNAL--Re: [GENERAL] PSQL does not remove obvious useless joins
On Fri, Jul 1, 2016 at 12:17 PM, Sfiligoi, Igor wrote:
Hello.
We have a view that is very generic, and we noticed that PostgreSQL is
not very good at rem
r
Cc: pgsql-general@postgresql.org
Subject: --EXTERNAL--Re: [GENERAL] PSQL does not remove obvious useless joins
On Fri, Jul 1, 2016 at 12:17 PM, Sfiligoi, Igor wrote:
> We have a view that is very generic, and we noticed that PostgreSQL is
> not very good at removing useless joins, whic
On Fri, Jul 1, 2016 at 12:17 PM, Sfiligoi, Igor wrote:
> We have a view that is very generic, and we noticed that PostgreSQL is not
> very good at removing useless joins, which makes our queries very slow.
>
> We could change our code to avoid the view and write ad-hoc queries to the
> underlying
I was hoping this use case would fit in.
Any suggestions?
Igor
-Original Message-
From: Merlin Moncure [mailto:mmonc...@gmail.com]
Sent: Friday, July 01, 2016 12:42 PM
To: Sfiligoi, Igor
Cc: pgsql-general@postgresql.org
Subject: --EXTERNAL--Re: [GENERAL] PSQL does not remove obvious useless
On Fri, Jul 1, 2016 at 12:17 PM, Sfiligoi, Igor wrote:
> Hello.
>
> We have a view that is very generic, and we noticed that PostgreSQL is not
> very good at removing useless joins, which makes our queries very slow.
>
> We could change our code to avoid the view and write ad-hoc queries to the
>
Hello.
We have a view that is very generic, and we noticed that PostgreSQL is not very
good at removing useless joins, which makes our queries very slow.
We could change our code to avoid the view and write ad-hoc queries to the
underlying tables, but would prefer not to, if there is a way aroun
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