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..

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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>
> 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

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.

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Theo


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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


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