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  1. oid...any optimizations

    sathiya psql <sathiya.psql@gmail.com> — 2008-03-06T07:02:01Z

    i had a table with 50 lakh record...

it has a column called oid ( obviously all the tables will have this ), but
while doing any operation it is getting slow because of the number of
records...

if i remove the oid column will i get any benefit, what are all the other
default columns created without our knowledge..

  2. Re: oid...any optimizations

    Joshua D. Drake <jd@commandprompt.com> — 2008-03-06T07:06:50Z

    On Thu, 6 Mar 2008 12:32:01 +0530
"sathiya psql" <sathiya.psql@gmail.com> wrote:

> i had a table with 50 lakh record...
> 
> it has a column called oid ( obviously all the tables will have
> this ), but while doing any operation it is getting slow because of
> the number of records...

Actually it isn't obvious as oids have been deprecated for years.

> 
> if i remove the oid column will i get any benefit, what are all the
> other default columns created without our knowledge..

What version of ancient PostgreSQL are you running exactly?

Joshua D. Drake


-- 
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  3. Re: oid...any optimizations

    sathiya psql <sathiya.psql@gmail.com> — 2008-03-06T07:13:57Z

    >
> Actually it isn't obvious as oids have been deprecated for years.


no in my version it is now also available....

>
>
> What version of ancient PostgreSQL are you running exactly?


postgresql 7.4

  4. Re: oid...any optimizations

    Theo Kramer <theo@flame.co.za> — 2008-03-06T07:21:36Z

    On Thu, 2008-03-06 at 12:32 +0530, sathiya psql wrote:
> i had a table with 50 lakh record...
> 
> it has a column called oid ( obviously all the tables will have
> this ), but while doing any operation it is getting slow because of
> the number of records...
> 
> if i remove the oid column will i get any benefit, what are all the
> other default columns created without our knowledge..

Probably not

Also - do not remove oid if your sql operations require it. 

A 'create index x_oid_idx on table x (oid)' might help. 

Also see EXPLAIN in the manual.

-- 
Regards
Theo

  5. Re: oid...any optimizations

    Joshua D. Drake <jd@commandprompt.com> — 2008-03-06T16:28:49Z

    On Thu, 6 Mar 2008 12:43:57 +0530
"sathiya psql" <sathiya.psql@gmail.com> wrote:

> >
> > Actually it isn't obvious as oids have been deprecated for years.
> 
> 
> no in my version it is now also available....

I didn't say they were gone. I said they are deprecated. You should not
be using them.

> 
> >
> >
> > What version of ancient PostgreSQL are you running exactly?
> 
> 
> postgresql 7.4

That is god awful ancient. Upgrade to something remotely new, like
8.2.6.

Joshua D. Drake

-- 
The PostgreSQL Company since 1997: http://www.commandprompt.com/ 
PostgreSQL Community Conference: http://www.postgresqlconference.org/
Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate
PostgreSQL SPI Liaison | SPI Director |  PostgreSQL political pundit