On 8/31/07, Jeff Davis <pgsql@j-davis.com> wrote:
> On Thu, 2007-08-30 at 21:43 -0400, Merlin Moncure wrote:
> > Well, a SRF may be unsuitable for various reasons, but maybe views are
> > better. I really like views more and more lately (better than
> > functions as a rule, I think).
> >
> > you have some query, select yadda
> > create view log_yadda as
> > select yadda
> > union all select null, null, null from log_func();
> >
>
> Interesting idea, I hadn't thought of that. Not perfect, but
> interesting.
create function func() returns bool as
$$
begin
raise notice 'log!';
return true;
end;
$$ language plpgsql;
how about this:
create view log_yadda sa
select yadda where (select func());
the parens around the function call force it to be evaluated as a scalar.
:-)
merlin