pg_dump and CHECK constraints

Curt Sampson wrote:

I notice that pg_dump is still dumping CHECK constraints with the table,
rather than at the very end, as it does with all the other constraints.
As discussed in bug report #787, at

http://archives.postgresql.org/pgsql-bugs/2002-09/msg00278.php

this breaks your restore if your CHECK constraint uses a user-defined
function.

1. Does anybody have any plans to fix this in the very near future?

2. If not, is there something that makes it particularly hard to
fix? I notice, Tom, that in your reply to that bug report you
intimated that this wasn't an easy fix, but I don't see why CHECK
constraints couldn't be added at the end of the dump, just as all
the other constraints are. Presumably, your message being late 2002,
this was before pg_dump was modified to re-order stuff?

3. If we created a patch for this at my work, would it be accepted?

I dunno...this looks really easy to me....

Please check CVS. I think Tom did some big work on dependency dumping.
If I do:

test=> CREATE FUNCTION func(INT) returns bool AS 'SELECT TRUE'
test-> LANGUAGE 'SQL';
CREATE FUNCTION
test=> CREATE TABLE yy (x INT CHECK (func(x) = TRUE));
CREATE TABLE
test=> INSERT INTO yy VALUES (1);
INSERT 17576 1

and in pg_dump output I see:

--
-- Name: func(integer); Type: FUNCTION; Schema: public; Owner: postgres
--

CREATE FUNCTION func(integer) RETURNS boolean
AS 'select true'
LANGUAGE sql;

--
-- Name: yy; Type: TABLE; Schema: public; Owner: postgres
--

CREATE TABLE yy (
x integer,
CONSTRAINT yy_x CHECK ((func(x) = true))
) WITH OIDS;

so this might be fixed in CVS already.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073