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Message-ID: <20050822102329.75393.qmail@web51901.mail.yahoo.com>
Date: Mon, 22 Aug 2005 03:23:29 -0700 (PDT)
From: Roger Tannous <roger77_lb@yahoo.com>
Subject: Re: A Table's Primary Key Listing
To: "D'Arcy J.M. Cain" <darcy@druid.net>
Cc: pgsql-sql@postgresql.org, tgl@sss.pgh.pa.us,
	roger77_lb@hotmail.com
In-Reply-To: <20050818135524.74852123.darcy@druid.net>
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So, D'Arcy's solution, although described as 'unsatisfactory' (ref.:
D'Arcy's message), seem to be the only solution.

So I noticed I was trying to play the wise man, trying to do things in a
better way, but nothing was found than D'Arcy's query:

SELECT pg_namespace.nspname, pg_class.relname,pg_attribute.attname
  FROM pg_class
JOIN pg_namespace ON pg_namespace.oid=pg_class.relnamespace AND
    pg_namespace.nspname NOT LIKE 'pg_%' AND pg_class.relname like 'sip_%'
JOIN pg_attribute ON pg_attribute.attrelid=pg_class.oid AND
    pg_attribute.attisdropped='f'
JOIN pg_index ON pg_index.indrelid=pg_class.oid AND
    pg_index.indisprimary='t' AND  
    (
      pg_index.indkey[0]=pg_attribute.attnum OR
      pg_index.indkey[1]=pg_attribute.attnum OR
      pg_index.indkey[2]=pg_attribute.attnum OR
      pg_index.indkey[3]=pg_attribute.attnum OR
      pg_index.indkey[4]=pg_attribute.attnum OR
      pg_index.indkey[5]=pg_attribute.attnum OR
      pg_index.indkey[6]=pg_attribute.attnum OR
      pg_index.indkey[7]=pg_attribute.attnum OR
      pg_index.indkey[8]=pg_attribute.attnum OR
      pg_index.indkey[9]=pg_attribute.attnum
    )
ORDER BY pg_namespace.nspname, pg_class.relname,pg_attribute.attname;


Regards,
Roger Tannous.

--- "D'Arcy J.M. Cain" <darcy@druid.net> wrote:

> On Thu, 18 Aug 2005 09:40:57 -0700 (PDT)
> Roger Tannous <roger77_lb@yahoo.com> wrote:
> > Thanks for your query :)
> > 
> > But it only shows the first of the primary keys of tables having
> multiple
> > primary keys :)
> > 
> > This is apparently because of the pg_index.indkey[0] thing, so how can
> we
> > manage this query in order to get all of the keys :)
> 
> That's a good question.  The following query does this in a very
> unsatisfactory way.  Anyone know what the general solution would be?
> 
> SELECT pg_namespace.nspname, pg_class.relname,pg_attribute.attname
>   FROM pg_class
> JOIN pg_namespace ON pg_namespace.oid=pg_class.relnamespace AND
>     pg_namespace.nspname NOT LIKE 'pg_%'
> JOIN pg_attribute ON pg_attribute.attrelid=pg_class.oid AND
>     pg_attribute.attisdropped='f'
> JOIN pg_index ON pg_index.indrelid=pg_class.oid AND
>     pg_index.indisprimary='t' AND
>     (
>       pg_index.indkey[0]=pg_attribute.attnum OR
>       pg_index.indkey[1]=pg_attribute.attnum OR
>       pg_index.indkey[2]=pg_attribute.attnum OR
>       pg_index.indkey[3]=pg_attribute.attnum OR
>       pg_index.indkey[4]=pg_attribute.attnum OR
>       pg_index.indkey[5]=pg_attribute.attnum OR
>       pg_index.indkey[6]=pg_attribute.attnum OR
>       pg_index.indkey[7]=pg_attribute.attnum OR
>       pg_index.indkey[8]=pg_attribute.attnum OR
>       pg_index.indkey[9]=pg_attribute.attnum
>     )
> ORDER BY pg_namespace.nspname, pg_class.relname,pg_attribute.attname;
> 
> -- 
> D'Arcy J.M. Cain <darcy@druid.net>         |  Democracy is three wolves
> http://www.druid.net/darcy/                |  and a sheep voting on
> +1 416 425 1212     (DoD#0082)    (eNTP)   |  what's for dinner.
> 


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