postgres

Robert Haas 4a81c02297 postgres_fdw: Avoid 'outer pathkeys do not match mergeclauses' error. When pushing down a join to a foreign server, postgres_fdw constructs an alternative plan to be used for any EvalPlanQual rechecks that prove to be necessary. This plan is stored as the outer subplan of the Foreign Scan implementing the pushed-down join. Previously, this alternative plan could have a different nominal sort ordering than its parent, which seemed OK since there will only be one tuple per base table anyway in the case of an EvalPlanQual recheck. Actually, though, it caused a problem if that path was used as a building block for the EvalPlanQual recheck plan of a higher-level foreign join, because we could end up with a merge join one of whose inputs was not labelled with the correct sort order. Repair by injecting an extra Sort node into the EvalPlanQual recheck plan whenever it would otherwise fail to be sorted at least as well as its parent Foreign Scan. Report by Jeff Janes. Patch by me, reviewed by Tom Lane, who also provided the test case and comment text. Discussion: http://postgr.es/m/CAMkU=1y2G8VOVBHv3iXU2TMAj7-RyBFFW1uhkr5sm9LQ2=X35g@mail.gmail.com		9 years ago
config	MSVC: Test whether 32-bit Perl needs -D_USE_32BIT_TIME_T.	9 years ago
contrib	postgres_fdw: Avoid 'outer pathkeys do not match mergeclauses' error.	9 years ago
doc	Fix behavior of ~> (cube, int) operator	9 years ago
src	Cope with indicator arrays that do not have the correct length.	9 years ago
.dir-locals.el	…
.gitattributes	Fix whitespace and remove obsolete gitattributes entry	10 years ago
.gitignore	Add .gitignore entries for AIX-specific intermediate build artifacts.	11 years ago
COPYRIGHT	Update copyright for 2018	9 years ago
GNUmakefile.in	Fix distclean/maintainer-clean targets to remove top-level tmp_install dir.	11 years ago
HISTORY	Change documentation references to PG website to use https: not http:	9 years ago
Makefile	Fix non-GNU makefiles for AIX make.	9 years ago
README	Change documentation references to PG website to use https: not http:	9 years ago
README.git	Change documentation references to PG website to use https: not http:	9 years ago
aclocal.m4	Replace our hacked version of ax_pthread.m4 with latest upstream version.	11 years ago
configure	Support linking with MinGW-built Perl.	9 years ago
configure.in	Prevent int128 from requiring more than MAXALIGN alignment.	9 years ago

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:

	https://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
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.