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Re: Bug in ALTER COLUMN SET DATA TYPE ?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Nikhil Sontakke <nikkhils(at)gmail(dot)com>
Cc: Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Bug in ALTER COLUMN SET DATA TYPE ?
Date: 2012-11-02 15:30:22
Message-ID: 28050.1351870222@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackers
Nikhil Sontakke <nikkhils(at)gmail(dot)com> writes:
>> Hmm.. I haven't yet tested on other branches. But I'm surprised that you
>> find it broken on so much old branches. "git annotate" suggests that the
>> offending error message was added by commit
>> 09ff76fcdb275769ac4d1a45a67416735613d04b and that commit is dated Apr 20,
>> 2012

> Mea Culpa. I did indeed add that error message. But it's strange when Tom
> says that this is broken since 8.3!

In the 8.4 branch, the error is coming from here:

regression=# \set VERBOSITY verbose
regression=# ALTER TABLE test ALTER COLUMN a  TYPE numeric;
ERROR:  42P16: constraint must be added to child tables too
LOCATION:  ATAddCheckConstraint, tablecmds.c:4467

which appears to have been added in commit cd902b331.  I think the
commit Pavan is looking at just moved the logic around.

			regards, tom lane


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