Refactor merge path generation code.

Robert Haas <rhaas@postgresql.org>

Commit: 59649c3f1cbd536314c0060dcabd234deab148b2
Author: Robert Haas <rhaas@postgresql.org>
Date: 2016-12-21T14:45:50Z
Releases: 10.0
Refactor merge path generation code.

This shouldn't change the set of paths that get generated in any
way, but it is preparatory work for further changes to allow a
partial path to be merge-joined witih a non-partial path to produce
a partial join path.

Dilip Kumar, with cosmetic adjustments by me.

Files

PathChange+/−
src/backend/optimizer/path/joinpath.c modified +250 −211