Re: BUG #15631: Generated as identity field in a temporary table withon commit drop corrupts system catalogs

On 2019-02-13 05:41, Michael Paquier wrote:
> On Wed, Feb 13, 2019 at 11:38:17AM +0900, Michael Paquier wrote:
>> Agreed.  I don't think that it is the correct logic to put an
>> after-the-fact CCI just before executing any drop or truncate actions.
>> It should happen after the creation of the new object so as it becomes
>> correctly visible within the transaction.
> 
> The problem comes from process_owned_by() in sequence.c which has
> added in v10 some handling for internal dependencies in the case of an
> identity sequence, and the dependency link between the sequence and
> its relation is added there.
> 
> Another thing I was wondering is if we should add the CCI directly to
> recordMultipleDependencies() for internal dependencies, still it seems
> to me that it would be an overkill as some dependency registrers may
> do the CCI by themselves after adding the pg_depend link and doing
> some other operations, so I discarded the idea.
> 
> The patch attached solves the problem, for consistency I would suggest
> doing the CCI even for auto dependencies.

What is the general coding principle here?  "You need an CCI $WHEN"?

-- 
Peter Eisentraut              http://www.2ndQuadrant.com/
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