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Tom Lane 969dc8cce9 Fix grammar for subscripting or field selection from a sub-SELECT result. 
Such cases should work, but the grammar failed to accept them because of
our ancient precedence hacks to convince bison that extra parentheses
around a sub-SELECT in an expression are unambiguous.  (Formally, they
*are* ambiguous, but we don't especially care whether they're treated as
part of the sub-SELECT or part of the expression.  Bison cares, though.)
Fix by adding a redundant-looking production for this case.

This is a fine example of why fixing shift/reduce conflicts via
precedence declarations is more dangerous than it looks: you can easily
cause the parser to reject cases that should work.

This has been wrong since commit 3db4056e22
or maybe before, and apparently some people have been working around it
by inserting no-op casts.  That method introduces a dump/reload hazard,
as illustrated in bug #7838 from Jan Mate.  Hence, back-patch to all
active branches.
2013-01-30 14:16:44 -05:00
config Don't reject threaded Python on FreeBSD. 2012-02-20 16:21:41 -05:00
contrib Unbreak 9.0 and 9.1 pg_upgrade. 2013-01-25 11:39:17 -05:00
doc DROP OWNED: don't try to drop tablespaces/databases 2013-01-28 19:00:14 -03:00
src Fix grammar for subscripting or field selection from a sub-SELECT result. 2013-01-30 14:16:44 -05:00
.gitignore Convert cvsignore to gitignore, and add .gitignore for build targets. 2010-09-22 12:57:06 +02:00
aclocal.m4
configure Ignore libedit/libreadline while probing for standard functions. 2012-12-18 16:24:01 -05:00
configure.in Ignore libedit/libreadline while probing for standard functions. 2012-12-18 16:24:01 -05:00
COPYRIGHT Update copyrights for 2013 2013-01-01 17:14:59 -05:00
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README
README.git

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/.