Robert Haas 88ba0ae2aa Consider Parallel Append of partial paths for UNION [ALL]. ...

Without this patch, we can implement a UNION or UNION ALL as an
Append where Gather appears beneath one or more of the Append
branches, but this lets us put the Gather node on top, with
a partial path for each relation underneath.

There is considerably more work that could be done to improve
planning in this area, but that will probably need to wait
for a future release.

Patch by me, reviewed and tested by Ashutosh Bapat and Rajkumar
Raghuwanshi.

Discussion: http://postgr.es/m/CA+TgmoaLRAOqHmMZx=ESM3VDEPceg+-XXZsRXQ8GtFJO_zbMSw@mail.gmail.com

2018-03-22 16:09:28 -04:00

..

Makefile

Improve RLS planning by marking individual quals with security levels.

2017-01-18 12:58:20 -05:00

prepjointree.c

Fix incorrect handling of subquery pullup in the presence of grouping sets.

2018-01-12 12:24:50 -05:00

prepqual.c

Fix improper uses of canonicalize_qual().

2018-03-11 18:10:42 -04:00

preptlist.c

Update copyright for 2018

2018-01-02 23:30:12 -05:00

prepunion.c

Consider Parallel Append of partial paths for UNION [ALL].

2018-03-22 16:09:28 -04:00