"Neil Conway" <neilc(at)samurai(dot)com>
> I've been taking a look at how to stop the planner from scribbling on
> its input. This is my first modification of any significance to the
> planner, so don't hesitate to tell me what I've gotten wrong :)
>
So is this change the preparation work of caching query plans? Like cleaning
the plans so they could be well shared?
Regards,
Qingqing