Re: delta relations in AFTER triggers

On 09/25/2014 06:54 PM, Kevin Grittner wrote:
> Heikki Linnakangas <hlinnakangas@vmware.com> wrote:
>
>> You cast the TuplestoreRelation to Plan, and pass it to CopyPlanFields.
>> That will crash, because TuplestoreRelation is nothing like a Plan:
>
> Oops.  That's a copy/paste error I should have noticed.  Fixed,
> even though the node type might be going away.  Since all of this
> seems to be working very well from a user point of view, I'm going
> to try to generate a lot more regression tests against the existing
> code before taking another run at the API, to make sure that things
> don't break in the refactoring.
>
> I didn't hit the copy/out bugs in testing so far -- any suggestions
> on a test that would exercise this code?  (I'm probably missing
> something obvious.)

There's some debugging code in tcop/postgres.c, search for 
COPY_PARSE_PLAN_TREES. It won't catch everything, but probably would've 
caught this one.

- Heikki