Robert Haas e7cb7ee145 Allow FDWs and custom scan providers to replace joins with scans. ... Foreign data wrappers can use this capability for so-called "join pushdown"; that is, instead of executing two separate foreign scans and then joining the results locally, they can generate a path which performs the join on the remote server and then is scanned locally. This commit does not extend postgres_fdw to take advantage of this capability; it just provides the infrastructure. Custom scan providers can use this in a similar way. Previously, it was only possible for a custom scan provider to scan a single relation. Now, it can scan an entire join tree, provided of course that it knows how to produce the same results that the join would have produced if executed normally. KaiGai Kohei, reviewed by Shigeru Hanada, Ashutosh Bapat, and me.		2015-05-01 08:50:35 -04:00
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aggregatecmds.c	Change many routines to return ObjectAddress rather than OID	2015-03-03 14:10:50 -03:00
alter.c	Remove variable shadowing	2015-04-07 17:14:00 -03:00
analyze.c	Add log_min_autovacuum_duration per-table option	2015-04-03 11:55:50 -03:00
async.c	Use FLEXIBLE_ARRAY_MEMBER in a number of other places.	2015-02-21 16:12:14 -05:00
cluster.c	Change many routines to return ObjectAddress rather than OID	2015-03-03 14:10:50 -03:00
collationcmds.c	Change many routines to return ObjectAddress rather than OID	2015-03-03 14:10:50 -03:00
comment.c	Change many routines to return ObjectAddress rather than OID	2015-03-03 14:10:50 -03:00
constraint.c	Update copyright for 2015	2015-01-06 11:43:47 -05:00
conversioncmds.c	Change many routines to return ObjectAddress rather than OID	2015-03-03 14:10:50 -03:00
copy.c	Create an infrastructure for parallel computation in PostgreSQL.	2015-04-30 15:02:14 -04:00
createas.c	Change many routines to return ObjectAddress rather than OID	2015-03-03 14:10:50 -03:00
dbcommands.c	Move WAL-related definitions from dbcommands.h to separate header file.	2015-03-09 15:50:49 +02:00
define.c	Update copyright for 2015	2015-01-06 11:43:47 -05:00
discard.c	Update copyright for 2015	2015-01-06 11:43:47 -05:00
dropcmds.c	Add transforms feature	2015-04-26 10:33:14 -04:00
event_trigger.c	Add transforms feature	2015-04-26 10:33:14 -04:00
explain.c	Allow FDWs and custom scan providers to replace joins with scans.	2015-05-01 08:50:35 -04:00
extension.c	Allow CURRENT/SESSION_USER to be used in certain commands	2015-03-09 15:41:54 -03:00
foreigncmds.c	Allow CURRENT/SESSION_USER to be used in certain commands	2015-03-09 15:41:54 -03:00
functioncmds.c	Add transforms feature	2015-04-26 10:33:14 -04:00
indexcmds.c	Fix various typos and grammar errors in comments.	2015-04-26 18:42:31 +02:00
lockcmds.c	Update copyright for 2015	2015-01-06 11:43:47 -05:00
Makefile	Row-Level Security Policies (RLS)	2014-09-19 11:18:35 -04:00
matview.c	Change many routines to return ObjectAddress rather than OID	2015-03-03 14:10:50 -03:00
opclasscmds.c	Change many routines to return ObjectAddress rather than OID	2015-03-03 14:10:50 -03:00
operatorcmds.c	Allow named parameters to be specified using => in addition to :=	2015-03-10 11:09:41 -04:00
policy.c	Allow CURRENT/SESSION_USER to be used in certain commands	2015-03-09 15:41:54 -03:00
portalcmds.c	Update copyright for 2015	2015-01-06 11:43:47 -05:00
prepare.c	Use FLEXIBLE_ARRAY_MEMBER in a bunch more places.	2015-02-20 00:11:42 -05:00
proclang.c	Add transforms feature	2015-04-26 10:33:14 -04:00
schemacmds.c	Allow CURRENT/SESSION_USER to be used in certain commands	2015-03-09 15:41:54 -03:00
seclabel.c	Change many routines to return ObjectAddress rather than OID	2015-03-03 14:10:50 -03:00
sequence.c	Create an infrastructure for parallel computation in PostgreSQL.	2015-04-30 15:02:14 -04:00
tablecmds.c	Fix ATSimpleRecursion() to allow recursion from a foreign table.	2015-04-28 12:25:00 -07:00
tablespace.c	Warn about tablespace creation in PGDATA	2015-04-28 17:35:12 -04:00
trigger.c	Reduce lock levels of some trigger DDL and add FKs	2015-04-05 11:37:08 -04:00
tsearchcmds.c	Add OID output argument to DefineTSConfiguration	2015-03-25 15:57:08 -03:00
typecmds.c	Add transforms feature	2015-04-26 10:33:14 -04:00
user.c	Integrate pg_upgrade_support module into backend	2015-04-14 19:26:37 -04:00
vacuum.c	Add log_min_autovacuum_duration per-table option	2015-04-03 11:55:50 -03:00
vacuumlazy.c	Add log_min_autovacuum_duration per-table option	2015-04-03 11:55:50 -03:00
variable.c	Update copyright for 2015	2015-01-06 11:43:47 -05:00
view.c	Require non-NULL pstate for all addRangeTableEntryFor* functions.	2015-03-11 15:26:43 -04:00