Re: Fix typo about generate_gather_paths

On 2020-Dec-22, Tomas Vondra wrote:

> Thanks. I started looking at this a bit more closely, and I think most of
> the changes are fine - the code was changed to call a different function,
> but the comments still reference generate_gather_paths().

Hi, this was forgotten. It seemed better to fix at least some of the
wrong references than not do anything, so I pushed the parts that seemed
100% correct. Regarding this one:

> The one exception seems to be create_ordered_paths(), because that comment
> also makes statements about what generate_gather_pathes is doing. And some
> of it does not apply to generate_useful_gather_paths.
> For example it says it generates order-preserving Gather Merge paths, but
> generate_useful_gather_paths also generates paths with sorts (which are
> clearly not order-preserving).

I left this one out. If Hou or Tomas want to propose/push a further
patch, that'd be great.

Thanks!

--
Álvaro Herrera 39°49'30"S 73°17'W
"I'm always right, but sometimes I'm more right than other times."
(Linus Torvalds)