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Tom Lane 324577f39b Fix inherited UPDATE/DELETE with UNION ALL subqueries. 
Fix an oversight in commit b3aaf9081a: we do
indeed need to process the planner's append_rel_list when copying RTE
subqueries, because if any of them were flattenable UNION ALL subqueries,
the append_rel_list shows which subquery RTEs were pulled up out of which
other ones.  Without this, UNION ALL subqueries aren't correctly inserted
into the update plans for inheritance child tables after the first one,
typically resulting in no update happening for those child table(s).
Per report from Victor Yegorov.

Experimentation with this case also exposed a fault in commit
a7b965382c: if an inherited UPDATE/DELETE
was proven totally dummy by constraint exclusion, we might arrive at
add_rtes_to_flat_rtable with root->simple_rel_array being NULL.  This
should be interpreted as not having any RelOptInfos.  I chose to code
the guard as a check against simple_rel_array_size, so as to also
provide some protection against indexing off the end of the array.

Back-patch to 9.2 where the faulty code was added.
2013-12-14 17:33:56 -05:00
config Compiler optimizations for page checksum code. 2013-04-30 06:59:26 +01:00
contrib Fix progress logging when scale factor is large. 2013-12-12 19:07:53 +09:00
doc Fix ancient docs/comments thinko: XID comparison is mod 2^32, not 2^31. 2013-12-12 12:39:54 -05:00
src Fix inherited UPDATE/DELETE with UNION ALL subqueries. 2013-12-14 17:33:56 -05:00
.gitignore Add pkg-config files for libpq and ecpg libraries 2013-03-31 16:58:40 -04:00
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Stamp 9.3.2. 2013-12-02 15:57:48 -05:00
configure.in Stamp 9.3.2. 2013-12-02 15:57:48 -05:00
COPYRIGHT Update copyrights for 2013 2013-01-01 17:15:01 -05:00
GNUmakefile.in Make init-po and update-po recursive make targets 2012-06-29 14:01:54 +03:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
README.git Fix doc links in README file to work with new website layout 2013-11-12 12:54:09 +01:00

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.  Changes between all PostgreSQL releases are recorded in the
file HISTORY.  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/.