Re: POC: postgres_fdw insert batching

Hi,
Do we need to consider how this part of code inside ExecInitModifyTable()
would evolve ?

I think placing the compound condition toward the end
of ExecInitModifyTable() is reasonable because it checks the latest
information.

Regards

On Wed, Jan 20, 2021 at 5:11 PM Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>
wrote:

>
>
> On 1/21/21 2:02 AM, Zhihong Yu wrote:
> > Hi, Tomas:
> > In my opinion, my patch is a little better.
> > Suppose one of the conditions in the if block changes in between the
> > start of loop and the end of the loop:
> >
> > * Determine if the FDW supports batch insert and determine the
> batch
> > * size (a FDW may support batching, but it may be disabled for the
> > * server/table).
> >
> > My patch would reflect that change. I guess this was the reason the if /
> > else block was placed there in the first place.
> >
>
> But can it change? All the loop does is extracting junk attributes from
> the plans, it does not modify anything related to the batching. Or maybe
> I just don't understand what you mean.
>
>
> regards
>
> --
> Tomas Vondra
> EnterpriseDB: http://www.enterprisedb.com
> The Enterprise PostgreSQL Company
>