> > 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>
Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL