Re: Question

On Sat, 2004-02-21 at 11:10, Shridhar Daithankar wrote:
> Rod Taylor wrote:
>
>
> > 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, but is in the spec.

--
Rod Taylor <rbt [at] rbt [dot] ca>

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