Re: A Table's Primary Key Listing - Mailing list pgsql-sql

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.relnamelike '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.attnumOR     pg_index.indkey[1]=pg_attribute.attnum OR
pg_index.indkey[2]=pg_attribute.attnumOR     pg_index.indkey[3]=pg_attribute.attnum OR
pg_index.indkey[4]=pg_attribute.attnumOR     pg_index.indkey[5]=pg_attribute.attnum OR
pg_index.indkey[6]=pg_attribute.attnumOR     pg_index.indkey[7]=pg_attribute.attnum OR
pg_index.indkey[8]=pg_attribute.attnumOR     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.
> 


__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com