Andrew Gierth b5635948ab Support hashed aggregation with grouping sets. ... This extends the Aggregate node with two new features: HashAggregate can now run multiple hashtables concurrently, and a new strategy MixedAggregate populates hashtables while doing sorted grouping. The planner will now attempt to save as many sorts as possible when planning grouping sets queries, while not exceeding work_mem for the estimated combined sizes of all hashtables used. No SQL-level changes are required. There should be no user-visible impact other than the new EXPLAIN output and possible changes to result ordering when ORDER BY was not used (which affected a few regression tests). The enable_hashagg option is respected. Author: Andrew Gierth Reviewers: Mark Dilger, Andres Freund Discussion: https://postgr.es/m/87vatszyhj.fsf@news-spur.riddles.org.uk		2017-03-27 04:20:54 +01:00
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expected	Support hashed aggregation with grouping sets.	2017-03-27 04:20:54 +01:00
sql	postgres_fdw: Push down FULL JOINs with restriction clauses.	2017-03-16 13:34:59 -04:00
.gitignore	Add postgres_fdw contrib module.	2013-02-21 05:27:16 -05:00
Makefile	Allow postgres_fdw to ship extension funcs/operators for remote execution.	2015-11-03 18:42:18 -05:00
connection.c	chomp PQerrorMessage() in backend uses	2017-02-27 08:54:51 -05:00
deparse.c	postgres_fdw: Push down FULL JOINs with restriction clauses.	2017-03-16 13:34:59 -04:00
option.c	Move some things from builtins.h to new header files	2017-01-20 20:29:53 -05:00
postgres_fdw--1.0.sql	Add postgres_fdw contrib module.	2013-02-21 05:27:16 -05:00
postgres_fdw.c	Faster expression evaluation and targetlist projection.	2017-03-25 14:52:06 -07:00
postgres_fdw.control	Add postgres_fdw contrib module.	2013-02-21 05:27:16 -05:00
postgres_fdw.h	postgres_fdw: Push down FULL JOINs with restriction clauses.	2017-03-16 13:34:59 -04:00
shippable.c	Update copyright via script for 2017	2017-01-03 13:48:53 -05:00