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[Fwd: Re: Question]

From: Rod Taylor <pg(at)rbt(dot)ca>
To: Postgresql Advocacy <pgsql-advocacy(at)postgresql(dot)org>
Subject: [Fwd: Re: Question]
Date: 2004-02-21 16:39:16
Message-ID: 1077381556.31467.13.camel@jester (view raw, whole thread or download thread mbox)
Lists: pgsql-advocacy
> > rbt=# select nspname, sum(relpages) from pg_class join pg_namespace n on
> > (relnamespace = n.oid) group by nspname, relnamespace having 2 > (SELECT
> > count(*) from pg_constraint where relnamespace = connamespace);
> > 
> > With some effort you might be able to get the above down to a single
> > line (shorter column names, etc.).
> > 
> > It takes the sum of pages used by relations in namespaces with a minimum
> > of 2 constraints.
> I think any query fiddling with metadata is a bad idea for a sig.

Of course. I was simply demonstrating a query class that is complicated
which many databases probably don't support (PostgreSQL didn't until
recently) and spec compliant.
Rod Taylor <pg [at] rbt [dot] ca>

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