Re: default index created for primary key

Hi,

I am actually migrating indexes from oracle database to postgres. I wanted
to turn it off so that index on the same columns is not created again (index
created for primary key of a table). I'll probably need to check in that
case and not create the index if it is on the primary key of the table since
that will be created by default.

I am still not clear on why postgres has this restriction?
By uniqueness, you mean to say that if later anyone wants to add a primary
key constraint on a table which already has a primary key defined, postgres
will use this index to determine that there is already a primary key defined
and would not allow to add this constraint since a table cannot have two
primary keys??

Thanks,
Vinita Bansal


>From: "Sander Steffann" <steffann@nederland.net>
>To: "'vinita bansal'" <sagivini@hotmail.com>,<pgsql-general@postgresql.org>
>Subject: Re: [GENERAL] default index created for primary key
>Date: Wed, 22 Dec 2004 16:50:58 +0100
>
>Hi,
>
> > I want to turn off the default setting in postgres for index
> > creation on primary key of a table. Is it possible and how?
>
>That is not possible, because the index is used to guarantee
>the uniqueness of the primary key.
>
>What is the reason you want to turn it off?
>Sander.
>
>
>---------------------------(end of broadcast)---------------------------
>TIP 4: Don't 'kill -9' the postmaster

_________________________________________________________________
Pep up your screen! Kickstart your day!
http://www.msn.co.in/Cinema/screensaver/ Get these vibrant screensavers!