pg.ddx.io pgsql-sql@postgresql.org mailing list archive
help / color / mirror / Atom feedFollowup from yesterday's PL/pgSQL fun...
9+ messages / 2 participants
[nested] [flat]
* Followup from yesterday's PL/pgSQL fun...
@ 2003-05-14 16:41 Larry Rosenman <ler@lerctr.org>
0 siblings, 1 reply; 9+ messages in thread
From: Larry Rosenman @ 2003-05-14 16:41 UTC (permalink / raw)
To: pgsql-sql
I posted:
Also, this is what I wound up with for that line, which seems ugly, because
it couldn't find a quote_literal(inet) without the ::text on it:
quote_literal(NEW.netblock::inet::text) ;
Is that right?
Can I ask 3 questions:
1) should quote_literal find a ::text conversion on it's own?
2) can text(cidr) be added to the default pg_cast table?
3) how can I add text(cidr) myself?
--
Larry Rosenman http://www.lerctr.org/~ler
Phone: +1 972-414-9812 E-Mail: ler@lerctr.org
US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Followup from yesterday's PL/pgSQL fun...
@ 2003-05-14 16:58 Tom Lane <tgl@sss.pgh.pa.us>
parent: Larry Rosenman <ler@lerctr.org>
0 siblings, 1 reply; 9+ messages in thread
From: Tom Lane @ 2003-05-14 16:58 UTC (permalink / raw)
To: Larry Rosenman <ler@lerctr.org>; +Cc: pgsql-sql
Larry Rosenman <ler@lerctr.org> writes:
> 1) should quote_literal find a ::text conversion on it's own?
It won't, because the pg_cast entry for inet->text is marked "explicit
casts only". In general I don't like implicit casts across datatype
categories, and am hoping to move in the direction of marking more such
casts as explicit-only.
> 2) can text(cidr) be added to the default pg_cast table?
I'll make that happen for 7.4.
> 3) how can I add text(cidr) myself?
Read the pg_cast description in
http://www.postgresql.org/docs/view.php?version=7.3&idoc=0&file=catalogs.html
Insert a suitable row.
regards, tom lane
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Followup from yesterday's PL/pgSQL fun...
@ 2003-05-14 17:02 Tom Lane <tgl@sss.pgh.pa.us>
parent: Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 1 reply; 9+ messages in thread
From: Tom Lane @ 2003-05-14 17:02 UTC (permalink / raw)
To: Larry Rosenman <ler@lerctr.org>; pgsql-sql
I said:
> Larry Rosenman <ler@lerctr.org> writes:
>> 3) how can I add text(cidr) myself?
> Read the pg_cast description in
> http://www.postgresql.org/docs/view.php?version=7.3&idoc=0&file=catalogs.html
> Insert a suitable row.
Actually, I think you can do it with CREATE CAST.
regards, tom lane
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Followup from yesterday's PL/pgSQL fun...
@ 2003-05-14 17:03 Larry Rosenman <ler@lerctr.org>
parent: Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 1 reply; 9+ messages in thread
From: Larry Rosenman @ 2003-05-14 17:03 UTC (permalink / raw)
To: Tom Lane <tgl@sss.pgh.pa.us>; pgsql-sql
--On Wednesday, May 14, 2003 13:02:48 -0400 Tom Lane <tgl@sss.pgh.pa.us>
wrote:
> I said:
>> Larry Rosenman <ler@lerctr.org> writes:
>>> 3) how can I add text(cidr) myself?
>
>> Read the pg_cast description in
>> http://www.postgresql.org/docs/view.php?version=7.3&idoc=0&file=catalogs
>> .html Insert a suitable row.
>
> Actually, I think you can do it with CREATE CAST.
The issue (for me) was decoding the function name(s).
I wish there was a \ command to display pg_cast...
LER
>
> regards, tom lane
--
Larry Rosenman http://www.lerctr.org/~ler
Phone: +1 972-414-9812 E-Mail: ler@lerctr.org
US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Followup from yesterday's PL/pgSQL fun...
@ 2003-05-14 17:08 Tom Lane <tgl@sss.pgh.pa.us>
parent: Larry Rosenman <ler@lerctr.org>
0 siblings, 1 reply; 9+ messages in thread
From: Tom Lane @ 2003-05-14 17:08 UTC (permalink / raw)
To: Larry Rosenman <ler@lerctr.org>; +Cc: pgsql-sql
Larry Rosenman <ler@lerctr.org> writes:
>> Actually, I think you can do it with CREATE CAST.
> The issue (for me) was decoding the function name(s).
I find the 7.3 OID-alias types very helpful for this sort of thing:
regression=# select castsource::regtype, casttarget::regtype, castfunc::regprocedure, castcontext from pg_cast limit 1;
castsource | casttarget | castfunc | castcontext
------------+------------+--------------+-------------
bigint | smallint | int2(bigint) | a
(1 row)
> I wish there was a \ command to display pg_cast...
There is (\dC). But it's not very bright --- I don't think you can
limit the rows displayed at all.
regards, tom lane
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Followup from yesterday's PL/pgSQL fun...
@ 2003-05-14 18:03 Larry Rosenman <ler@lerctr.org>
parent: Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 1 reply; 9+ messages in thread
From: Larry Rosenman @ 2003-05-14 18:03 UTC (permalink / raw)
To: Tom Lane <tgl@sss.pgh.pa.us>; +Cc: pgsql-sql
--On Wednesday, May 14, 2003 13:08:23 -0400 Tom Lane <tgl@sss.pgh.pa.us>
wrote:
> Larry Rosenman <ler@lerctr.org> writes:
>>> Actually, I think you can do it with CREATE CAST.
>
>> The issue (for me) was decoding the function name(s).
>
> I find the 7.3 OID-alias types very helpful for this sort of thing:
>
> regression=# select castsource::regtype, casttarget::regtype,
> castfunc::regprocedure, castcontext from pg_cast limit 1; castsource |
> casttarget | castfunc | castcontext
> ------------+------------+--------------+-------------
> bigint | smallint | int2(bigint) | a
> (1 row)
>
>> I wish there was a \ command to display pg_cast...
>
> There is (\dC). But it's not very bright --- I don't think you can
> limit the rows displayed at all.
$ psql
Welcome to psql 7.3.2, the PostgreSQL interactive terminal.
Type: \copyright for distribution terms
\h for help with SQL commands
\? for help on internal slash commands
\g or terminate with semicolon to execute query
\q to quit
ler=# \dC
Did not find any relation named "C".
ler=#
Hrm.
>
> regards, tom lane
--
Larry Rosenman http://www.lerctr.org/~ler
Phone: +1 972-414-9812 E-Mail: ler@lerctr.org
US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Followup from yesterday's PL/pgSQL fun...
@ 2003-05-14 18:13 Tom Lane <tgl@sss.pgh.pa.us>
parent: Larry Rosenman <ler@lerctr.org>
0 siblings, 1 reply; 9+ messages in thread
From: Tom Lane @ 2003-05-14 18:13 UTC (permalink / raw)
To: Larry Rosenman <ler@lerctr.org>; +Cc: pgsql-sql
Larry Rosenman <ler@lerctr.org> writes:
> --On Wednesday, May 14, 2003 13:08:23 -0400 Tom Lane <tgl@sss.pgh.pa.us>
> wrote:
>>> I wish there was a \ command to display pg_cast...
>>
>> There is (\dC). But it's not very bright --- I don't think you can
>> limit the rows displayed at all.
> ler=# \dC
> Did not find any relation named "C".
Mph. It's there in CVS tip ... must have been added since 7.3.
regards, tom lane
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Followup from yesterday's PL/pgSQL fun...
@ 2003-05-14 18:14 Larry Rosenman <ler@lerctr.org>
parent: Tom Lane <tgl@sss.pgh.pa.us>
0 siblings, 1 reply; 9+ messages in thread
From: Larry Rosenman @ 2003-05-14 18:14 UTC (permalink / raw)
To: Tom Lane <tgl@sss.pgh.pa.us>; +Cc: pgsql-sql
--On Wednesday, May 14, 2003 14:13:12 -0400 Tom Lane <tgl@sss.pgh.pa.us>
wrote:
> Larry Rosenman <ler@lerctr.org> writes:
>> --On Wednesday, May 14, 2003 13:08:23 -0400 Tom Lane <tgl@sss.pgh.pa.us>
>> wrote:
>>>> I wish there was a \ command to display pg_cast...
>>>
>>> There is (\dC). But it's not very bright --- I don't think you can
>>> limit the rows displayed at all.
>
>> ler=# \dC
>> Did not find any relation named "C".
>
> Mph. It's there in CVS tip ... must have been added since 7.3.
C'est la vie. That means maybe it can be smartened up to do limiting?
:-)
--
Larry Rosenman http://www.lerctr.org/~ler
Phone: +1 972-414-9812 E-Mail: ler@lerctr.org
US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749
^ permalink raw reply [nested|flat] 9+ messages in thread
* Re: Followup from yesterday's PL/pgSQL fun...
@ 2003-05-14 18:16 Tom Lane <tgl@sss.pgh.pa.us>
parent: Larry Rosenman <ler@lerctr.org>
0 siblings, 0 replies; 9+ messages in thread
From: Tom Lane @ 2003-05-14 18:16 UTC (permalink / raw)
To: Larry Rosenman <ler@lerctr.org>; +Cc: pgsql-sql
Larry Rosenman <ler@lerctr.org> writes:
>>> There is (\dC). But it's not very bright --- I don't think you can
>>> limit the rows displayed at all.
> C'est la vie. That means maybe it can be smartened up to do limiting?
If someone can think of a reasonable way. The other \d commands all use
wildcard patterns to match against object names ... but a cast hasn't
got a name, really.
regards, tom lane
^ permalink raw reply [nested|flat] 9+ messages in thread
end of thread, other threads:[~2003-05-14 18:16 UTC | newest]
Thread overview: 9+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2003-05-14 16:41 Followup from yesterday's PL/pgSQL fun... Larry Rosenman <ler@lerctr.org>
2003-05-14 16:58 ` Tom Lane <tgl@sss.pgh.pa.us>
2003-05-14 17:02 ` Tom Lane <tgl@sss.pgh.pa.us>
2003-05-14 17:03 ` Larry Rosenman <ler@lerctr.org>
2003-05-14 17:08 ` Tom Lane <tgl@sss.pgh.pa.us>
2003-05-14 18:03 ` Larry Rosenman <ler@lerctr.org>
2003-05-14 18:13 ` Tom Lane <tgl@sss.pgh.pa.us>
2003-05-14 18:14 ` Larry Rosenman <ler@lerctr.org>
2003-05-14 18:16 ` Tom Lane <tgl@sss.pgh.pa.us>
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox