Re: TODO items for window functions

Robert Haas wrote:
> > I am not thrilled about inventing a new column for this, but how about
> > a display like so:
> >
> > regression=# \df nth_value
> > List of functions
> > Schema | Name | Result data type | Argument data types
> > ------------+-----------+------------------+---------------------------------
> > pg_catalog | nth_value | anyelement | anyelement, integer OVER window
> >
> > or some other addition that only shows up when needed.
>
> I think this whole idea is a bad one. In the current release, you can do
>
> DROP FUNCTION Name ( Argument data types )
>
> ...and it will work. Maybe you will say that no one is doing this via
> a script (which I wouldn't bet on, but it's possible) but I'm sure
> people are doing it via cut and paste, because I have done exactly
> this thing. Any of the various proposals for hacking up Argument data
> types will make this no longer true, and somebody will get confused.
> I think you should bite the bullet and add a "type" column (f for
> regular function and w for window? could there be others in the
> future?).

I assume this is still an open issue.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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