Re: pg_casts view (was Re: date_trun() with timezones? (was Re: TIME column ...))

Tom Lane wrote:
> Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:
>> Tom Lane escribi�:
>>> regression=# select casttarget::regtype,castcontext,castfunc::regprocedure from pg_cast where castsource = 'time'::regtype;
>
>> BTW it very much looks like we should have a pg_casts view that displays
>> these things in a human-readable manner (like the above except with
>> castcontext expanded)
>
> There already is a \dC command in psql, which has nice enough output
> format but doesn't provide any way to select a subset of the table.
> Maybe we should just agree that its argument is a pattern for the
> castsource type's name?

I'd say it could be a pattern for both source and target. Often times I
am interested in casts in either direction.