Re: Wired if-statement in gen_partprune_steps_internal

On Thu, Apr 8, 2021 at 7:41 PM David Rowley <dgrowleyml(at)gmail(dot)com> wrote:
> On Thu, 8 Apr 2021 at 21:04, Amit Langote <amitlangote09(at)gmail(dot)com> wrote:
> > Maybe, we should also updated the description of node struct as
> > follows to consider that last point:
>>
> > * PartitionPruneStepOp - Information to prune using a set of mutually ANDed
> > * OpExpr and any IS [ NOT ] NULL clauses
>
> I didn't add that. I wasn't really sure if I understood why we'd talk
> about PartitionPruneStepCombine in the PartitionPruneStepOp. I thought
> the overview in gen_partprune_steps_internal was ok to link the two
> together and explain why they're both needed.

Sorry, maybe the way I wrote it was a bit confusing, but I meant to
suggest that we do what I have quoted above from my last email. That
is, we should clarify in the description of PartitionPruneStepOp that
it contains information derived from OpExprs and in some cases also IS
[ NOT ] NULL clauses.

Thanks for the commit.

--
Amit Langote
EDB: http://www.enterprisedb.com