Re: Fixing findDependentObjects()'s dependency on scan order (regressions in DROP diagnostic messages)

Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> On 2019-Feb-09, Tom Lane wrote:
>> Well, the question that's begged here is exactly why it's okay to remove
>> the trigger and dependency link despite the fact that the constraint needs
>> it.  I suppose the answer is that we'll subsequently insert a new trigger
>> implementing the same constraint (and internally-linked to it)?  That
>> information is what I'd like to have in the comment.

> Well, the answer is that the trigger is no longer needed.  This is an
> action trigger, i.e. it's attached to the referenced relation; and the
> action is making an independent table become a partition.  Since the
> partition is reachable by the action trigger that goes through the
> parent table, we no longer need the action trigger that goes directly to
> the partition.

Oh ... then why don't we go ahead and get rid of the constraint entry,
too?

			regards, tom lane