Robert Haas ccd8f97922 postgres_fdw: Consider requesting sorted data so we can do a merge join. ... When use_remote_estimate is enabled, consider adding ORDER BY to the query we sending to the remote server so that we can use that ordered data for a merge join. Commit f18c944b61 arranges to push down the query pathkeys, which seems like the case mostly likely to be a win, but testing shows this can sometimes win, too. For a regular table, we know which indexes are present and therefore test whether the ordering provided by each such index is useful. Here, we take the opposite approach: guess what orderings would be useful if they could be generated cheaply, and then ask the remote side what those will cost. Ashutosh Bapat, with very substantial cosmetic revisions by me. Also reviewed by Rushabh Lathia.		2015-12-22 13:46:40 -05:00
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access	Fix commit timestamp initialization	2015-12-11 14:30:43 -03:00
bootstrap	pgindent run for 9.5	2015-05-23 21:35:49 -04:00
catalog	Fix handling of inherited check constraints in ALTER COLUMN TYPE (again).	2015-11-20 14:55:47 -05:00
commands	Rework internals of changing a type's ownership	2015-12-17 14:25:41 -03:00
common	pgindent run for 9.5	2015-05-23 21:35:49 -04:00
datatype	Define integer limits independently from the system definitions.	2015-04-02 17:43:35 +02:00
executor	Allow EXPLAIN (ANALYZE, VERBOSE) to display per-worker statistics.	2015-12-09 13:21:19 -05:00
foreign	Allow foreign and custom joins to handle EvalPlanQual rechecks.	2015-12-08 12:31:03 -05:00
lib	Avoid use of float arithmetic in bipartite_match.c.	2015-08-23 13:02:18 -04:00
libpq	Don't send protocol messages to a shm_mq that no longer exists.	2015-10-16 09:42:33 -04:00
mb	Avoid doing encoding conversions by double-conversion via MULE_INTERNAL.	2015-11-28 13:42:27 -05:00
nodes	Revert 9246af6799 because	2015-12-18 21:35:22 +03:00
optimizer	postgres_fdw: Consider requesting sorted data so we can do a merge join.	2015-12-22 13:46:40 -05:00
parser	Determine whether it's safe to attempt a parallel plan for a query.	2015-09-16 15:38:47 -04:00
port	Make abbreviated key comparisons for text a bit cheaper.	2015-10-09 15:06:06 -04:00
portability	Use mmap MAP_NOSYNC option to limit shared memory writes	2015-03-21 22:06:19 -04:00
postmaster	Pass extra data to bgworkers, and use this to fix parallel contexts.	2015-11-05 12:13:56 -05:00
regex	Implement lookbehind constraints in our regular-expression engine.	2015-10-30 19:14:19 -04:00
replication	Fix "sesssion" typo	2015-09-28 19:13:42 -03:00
rewrite	RLS refactoring	2015-09-15 15:49:31 -04:00
snowball	Update copyright for 2015	2015-01-06 11:43:47 -05:00
storage	Move buffer I/O and content LWLocks out of the main tranche.	2015-12-15 13:32:54 -05:00
tcop	Adjust behavior of single-user -j mode for better initdb error reporting.	2015-12-17 19:34:15 -05:00
tsearch	Fix statically allocated struct with FLEXIBLE_ARRAY_MEMBER member.	2015-02-20 17:50:18 -05:00
utils	Avoid caching expression state trees for domain constraints across queries.	2015-11-29 18:18:42 -05:00
.gitignore	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	2012-10-07 21:52:43 -04:00
c.h	Remove support for Unix systems without the POSIX signal APIs.	2015-08-31 12:56:10 -04:00
fmgr.h	Fix comment in fmgr.h to refer to actual function used.	2015-06-15 23:21:03 -04:00
funcapi.h	pgindent run for 9.5	2015-05-23 21:35:49 -04:00
getaddrinfo.h	Update copyright for 2015	2015-01-06 11:43:47 -05:00
getopt_long.h	Update copyright for 2015	2015-01-06 11:43:47 -05:00
Makefile	Install lwlocknames.h even in vpath builds.	2015-09-11 16:45:41 -04:00
miscadmin.h	Perform an immediate shutdown if the postmaster.pid file is removed.	2015-10-06 17:15:52 -04:00
pg_config.h.in	Cope with Readline's failure to track SIGWINCH events outside of input.	2015-12-16 16:59:35 -05:00
pg_config.h.win32	Add BSWAP64 macro.	2015-10-08 13:01:36 -04:00
pg_config_ext.h.in	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	2012-10-07 21:52:43 -04:00
pg_config_ext.h.win32	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	2012-10-07 21:52:43 -04:00
pg_config_manual.h	Define integer limits independently from the system definitions.	2015-04-02 17:43:35 +02:00
pg_getopt.h	Update copyright for 2015	2015-01-06 11:43:47 -05:00
pg_trace.h	Update copyright for 2015	2015-01-06 11:43:47 -05:00
pgstat.h	pgindent run for 9.5	2015-05-23 21:35:49 -04:00
pgtar.h	Adopt the GNU convention for handling tar-archive members exceeding 8GB.	2015-11-21 20:21:31 -05:00
pgtime.h	Update copyright for 2015	2015-01-06 11:43:47 -05:00
port.h	Redesign tablesample method API, and do extensive code review.	2015-07-25 14:39:00 -04:00
postgres.h	Support "expanded" objects, particularly arrays, for better performance.	2015-05-14 12:08:49 -04:00
postgres_ext.h	pgindent run for 9.4	2014-05-06 12:12:18 -04:00
postgres_fe.h	Update copyright for 2015	2015-01-06 11:43:47 -05:00
rusagestub.h	Update copyright for 2015	2015-01-06 11:43:47 -05:00
windowapi.h	Update copyright for 2015	2015-01-06 11:43:47 -05:00