On Mon, 04 Aug 2003 20:07:18 -0400 Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Richard Welty <rwelty@averillpark.net> writes:
> > On Mon, 04 Aug 2003 18:07:49 -0400 Tom Lane <tgl@sss.pgh.pa.us> wrote:
> >> You don't have to. See CREATE CAST.
>
> > cool. although it does look like there's still a piece missing:
>
> > test=# create cast( varchar as cidr) with function cidr( varchar);
> > ERROR: CreateCast: function cidr(character varying) does not exist
>
> Yeah, you'd need to create a pg_proc entry for cidr(varchar) --- though
> you can get away with letting it point to the implementation function
> for cidr(text).
which would be a new row looking like this one, but with a different entry
in the vector of arg types. at this point, i end up needing to know the
OIDs for the argument types to do this after all. i guess i can figure that
out from looking at other functions in the pg_proc table.
test=# select * from pg_proc where proname = 'cidr';
proname | pronamespace | proowner | prolang | proisagg | prosecdef
---------+--------------+----------+---------+----------+----------
cidr | 11 | 1 | 12 | f | f
| proisstrict | proretset | provolatile | pronargs | prorettype |
-+-------------+-----------+-------------+----------+------------+
| t | f | i | 1 | 650 |
proargtypes | prosrc | probin | proacl
-------------+-----------+--------+--------
25 | text_cidr | - | {=X}
(1 row)
test=#
--
Richard Welty rwelty@averillpark.net
Averill Park Networking 518-573-7592
Java, PHP, PostgreSQL, Unix, Linux, IP Network Engineering, Security
