postgresql/contrib/postgres_fdw
Tomas Vondra ba3e76cc57 Consider Incremental Sort paths at additional places
Commit d2d8a229bc introduced Incremental Sort, but it was considered
only in create_ordered_paths() as an alternative to regular Sort. There
are many other places that require sorted input and might benefit from
considering Incremental Sort too.

This patch modifies a number of those places, but not all. The concern
is that just adding Incremental Sort to any place that already adds
Sort may increase the number of paths considered, negatively affecting
planning time, without any benefit. So we've taken a more conservative
approach, based on analysis of which places do affect a set of queries
that did seem practical. This means some less common queries may not
benefit from Incremental Sort yet.

Author: Tomas Vondra
Reviewed-by: James Coleman
Discussion: https://postgr.es/m/CAPpHfds1waRZ=NOmueYq0sx1ZSCnt+5QJvizT8ndT2=etZEeAQ@mail.gmail.com
2020-04-07 16:43:22 +02:00
..
expected Add connection parameters to control SSL protocol min/max in libpq 2020-01-28 10:40:48 +09:00
sql In postgres_fdw, don't try to ship MULTIEXPR updates to remote server. 2020-01-26 14:31:08 -05:00
.gitignore Add postgres_fdw contrib module. 2013-02-21 05:27:16 -05:00
connection.c Fix compile failure. 2020-02-24 18:43:40 -05:00
deparse.c In postgres_fdw, don't try to ship MULTIEXPR updates to remote server. 2020-01-26 14:31:08 -05:00
Makefile Split all OBJS style lines in makefiles into one-line-per-entry style. 2019-11-05 14:41:07 -08:00
option.c Only superuser can set sslcert/sslkey in postgres_fdw user mappings 2020-01-13 18:08:09 +10:30
postgres_fdw--1.0.sql Add postgres_fdw contrib module. 2013-02-21 05:27:16 -05:00
postgres_fdw.c Consider Incremental Sort paths at additional places 2020-04-07 16:43:22 +02:00
postgres_fdw.control Add postgres_fdw contrib module. 2013-02-21 05:27:16 -05:00
postgres_fdw.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
shippable.c Update copyrights for 2020 2020-01-01 12:21:45 -05:00