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Re: BUG #18970: Atempt to alter type of table column used in row type with check leads to assertion failure

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: jian he <jian.universality@gmail.com>
Cc: exclusion@gmail.com, pgsql-bugs@lists.postgresql.org
Date: 2025-06-29T17:32:40Z
Lists: pgsql-bugs

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I wrote:
> jian he <jian.universality@gmail.com> writes:
>> we can change to
>> 	if (relid != tab->relid)
>> 		LockRelationOid(relid, AccessExclusiveLock);
>> obviously, the comments need to be updated.

> Yeah, I came to the same conclusion after studying it for awhile.

Here's a patch for that.  Working on back-patching it ...

			regards, tom lane

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

  1. Obtain required table lock during cross-table constraint updates.

  2. Add assertions that we hold some relevant lock during relation open.