On 2019/03/27 23:57, Tom Lane wrote:
> David Rowley <david.rowley@2ndquadrant.com> writes:
>> On Wed, 27 Mar 2019 at 18:39, Amit Langote
>> <Langote_Amit_f8@lab.ntt.co.jp> wrote:
>>> On 2019/03/27 14:26, David Rowley wrote:
>>>> Perhaps the way to make this work, at least in the long term is to do
>>>> in the planner what we did in the executor in d73f4c74dd34.
>
>>> Maybe you meant 9ddef36278a9?
>
>> Probably.
>
> Yeah, there's something to be said for having plancat.c open each table
> *and store the Relation pointer in the RelOptInfo*, and then close that
> again at the end of planning rather than immediately. If we can't avoid
> these retail table_opens without a great deal of pain, that's the
> direction I'd tend to go in. However it would add some overhead, in
> the form of a need to traverse the RelOptInfo array an additional time.
Just to be sure, do you mean we should do that now or later (David said
"in the long term")?
Thanks,
Amit