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Robert Haas 325b357bc2 Allow foreign and custom joins to handle EvalPlanQual rechecks. 
Commit e7cb7ee145 provided basic
infrastructure for allowing a foreign data wrapper or custom scan
provider to replace a join of one or more tables with a scan.
However, this infrastructure failed to take into account the need
for possible EvalPlanQual rechecks, and ExecScanFetch would fail
an assertion (or just overwrite memory) if such a check was attempted
for a plan containing a pushed-down join.  To fix, adjust the EPQ
machinery to skip some processing steps when scanrelid == 0, making
those the responsibility of scan's recheck method, which also has
the responsibility in this case of correctly populating the relevant
slot.

To allow foreign scans to gain control in the right place to make
use of this new facility, add a new, optional RecheckForeignScan
method.  Also, allow a foreign scan to have a child plan, which can
be used to correctly populate the slot (or perhaps for something
else, but this is the only use currently envisioned).

KaiGai Kohei, reviewed by Robert Haas, Etsuro Fujita, and Kyotaro
Horiguchi.
2015-12-08 12:54:33 -05:00
..
access Further tweak commit_timestamp behavior 2015-12-03 19:22:31 -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 14:55:28 -05:00
commands Disallow converting a table to a view if row security is present. 2015-07-28 16:24:09 -07:00
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 Fix some issues in new hashtable size calculations in nodeHash.c. 2015-10-04 14:06:51 -04:00
foreign Allow foreign and custom joins to handle EvalPlanQual rechecks. 2015-12-08 12:54:33 -05:00
lib Avoid use of float arithmetic in bipartite_match.c. 2015-08-23 13:02:19 -04:00
libpq Don't send protocol messages to a shm_mq that no longer exists. 2015-10-16 09:49:08 -04:00
mb Teach UtfToLocal/LocalToUtf to support algorithmic encoding conversions. 2015-05-14 22:27:12 -04:00
nodes Allow foreign and custom joins to handle EvalPlanQual rechecks. 2015-12-08 12:54:33 -05:00
optimizer Allow foreign and custom joins to handle EvalPlanQual rechecks. 2015-12-08 12:54:33 -05:00
parser Create new ParseExprKind for use by policy expressions. 2015-07-29 15:41:00 -07:00
port Fix comment atomics.h. 2015-08-05 13:07:44 +02:00
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 12:21:00 -05:00
regex Improve memory-usage accounting in regular-expression compiler. 2015-10-16 15:56:00 -04:00
replication Fix "sesssion" typo 2015-09-28 19:13:42 -03:00
rewrite RLS refactoring 2015-09-15 15:49:40 -04:00
snowball Update copyright for 2015 2015-01-06 11:43:47 -05:00
storage Remove cautions about using volatile from spin.h. 2015-10-16 14:10:28 -04:00
tcop pgindent run for 9.5 2015-05-23 21:35:49 -04:00
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 Fix more typos in comments. 2015-05-20 19:45:43 +03:00
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 all headers for the new atomics API. 2014-10-02 16:52:21 +02:00
miscadmin.h Perform an immediate shutdown if the postmaster.pid file is removed. 2015-10-06 17:15:27 -04:00
pg_config.h.in Use Intel SSE 4.2 CRC instructions where available. 2015-04-14 17:05:03 +03:00
pg_config.h.win32 Stamp 9.5beta2. 2015-11-09 14:54:00 -05:00
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 20:21:32 -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