[HACKERS] help:how to write a planner_hook and other hooks in pg

[张中]

Hi all:

I am doing some experiments programming on PG. I tried to modify planner and
I find the ‘planner_hook’ in source code, but I don’t know how to use it.

Anybody knows? If any code sample, very precious.

Thanks

 

张茂森 ZhangMaosen