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Tom Lane 4fcf48450d Get rid of the planner's LateralJoinInfo data structure. I originally modeled this data structure on SpecialJoinInfo, but after commit `acfcd45cac` that looks like a pretty poor decision. All we really need is relid sets identifying laterally-referenced rels; and most of the time, what we want to know about includes indirect lateral references, a case the LateralJoinInfo data was unsuited to compute with any efficiency. The previous commit redefined RelOptInfo.lateral_relids as the transitive closure of lateral references, so that it easily supports checking indirect references. For the places where we really do want just direct references, add a new RelOptInfo field direct_lateral_relids, which is easily set up as a copy of lateral_relids before we perform the transitive closure calculation. Then we can just drop lateral_info_list and LateralJoinInfo and the supporting code. This makes the planner's handling of lateral references noticeably more efficient, and shorter too. Such a change can't be back-patched into stable branches for fear of breaking extensions that might be looking at the planner's data structures; but it seems not too late to push it into 9.5, so I've done so.		2015-12-11 15:52:38 -05:00
config	Accept flex > 2.5.x in configure.	2015-11-18 17:45:05 -05:00
contrib	Allow foreign and custom joins to handle EvalPlanQual rechecks.	2015-12-08 12:31:03 -05:00
doc	Fix typo.	2015-12-10 11:14:09 -05:00
src	Get rid of the planner's LateralJoinInfo data structure.	2015-12-11 15:52:38 -05:00
.dir-locals.el	emacs: Set indent-tabs-mode in perl-mode	2015-04-12 23:53:23 -04:00
.gitattributes	Add functions for dealing with PGP armor header lines to pgcrypto.	2014-10-01 16:03:39 +03:00
.gitignore	Add .gitignore entries for AIX-specific intermediate build artifacts.	2015-07-08 20:44:22 -04:00
COPYRIGHT	Update copyright for 2015	2015-01-06 11:43:47 -05:00
GNUmakefile.in	Fix distclean/maintainer-clean targets to remove top-level tmp_install dir.	2015-05-13 18:48:05 -04:00
HISTORY	Improve text of stub HISTORY file.	2014-02-12 18:16:17 -05:00
Makefile	Allow make check in PL directories	2011-02-15 06:52:12 +02:00
README	Don't generate plain-text HISTORY and src/test/regress/README anymore.	2014-02-10 20:48:04 -05:00
README.git	Don't generate plain-text HISTORY and src/test/regress/README anymore.	2014-02-10 20:48:04 -05:00
aclocal.m4	Replace our hacked version of ax_pthread.m4 with latest upstream version.	2015-07-08 20:36:06 +03:00
configure	Accept flex > 2.5.x in configure.	2015-11-18 17:45:05 -05:00
configure.in	Add BSWAP64 macro.	2015-10-08 13:01:36 -04:00

README

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	http://www.postgresql.org/download

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
http://www.postgresql.org/download/.  For more information look at our
web site located at http://www.postgresql.org/.