Re: [GENERAL] pg-dump -- primary Key

From: "Dan Wilson" <dan_wilson(at)geocities(dot)com>
To: "pgsql general" <pgsql-general(at)postgreSQL(dot)org>
Subject: Re: [GENERAL] pg-dump -- primary Key
Date: 1999-07-26 02:30:53
Message-ID: 004f01bed710$efbf68e0$ac0bfea9@dwilson
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I understand this, but does it set the indisprimary flag in the pg_index
table? The reason I ask is because I am writing a web based app to
administer a pgsql database and am attempting to keep track of the
indices/keys.

This is the property I am looking at determine whether the index is a
primary key. Is there a better property or flag to examine for this
purpose?

-Dan

> On Sun, Jul 25, 1999 at 03:13:39PM +1000, Chris Bitmead wrote:
> > Dan Wilson wrote:
> >
> > > Yes, I am aware that the primary key does not really mean anything
except
> > > implicitly making it a unique key, but it's supposed to be there for
> > > compatibility and it's not even in the dump.
> >
> > Someone mentioned recently that primary key enforces nulls as unique
> > whereas unique index doesn't.
> >
>
> Actually, I belive it enforces NOT NULL on primary keys, which it also
> dumps in the pg_dump output.
>
> Ross

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