postgresql

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Tom Lane ae58f1430a Fix failure to cover scalar-vs-rowtype cases in exec_stmt_return(). In commit `9e3ad1aac5` I modified plpgsql to use exec_stmt_return's simple-variables fast path in more cases. However, I overlooked that there are really two different return conventions in use here, depending on whether estate->retistuple is true, and the existing fast-path code had only bothered to handle one of them. So trying to return a scalar in a function returning composite, or vice versa, could lead to unexpected error messages (typically "cache lookup failed for type 0") or to a null-pointer-dereference crash. In the DTYPE_VAR case, we can just throw error if retistuple is true, corresponding to what happens in the general-expression code path that was being used previously. (Perhaps someday both of these code paths should attempt a coercion, but today is not that day.) In the REC and ROW cases, just hand the problem to exec_eval_datum() when not retistuple. Also clean up the ROW coding slightly so it looks more like exec_eval_datum(). The previous commit also caused exec_stmt_return_next() to be used in more cases, but that code seems to be OK as-is. Per off-list report from Serge Rielau. This bug is new in 9.5 so no need to back-patch.		2015-06-12 13:44:06 -04:00
config	Remove configure check prohibiting threaded libpython on OpenBSD.	2015-05-26 22:14:59 -04:00
contrib	Make Python tests more portable	2015-05-31 07:10:45 -04:00
doc	Fix alphabetization in catalogs.sgml.	2015-06-12 12:59:29 +09:00
src	Fix failure to cover scalar-vs-rowtype cases in exec_stmt_return().	2015-06-12 13:44:06 -04:00
.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	Improve speed of make check-world	2015-04-23 08:59:52 -04:00
aclocal.m4
configure	Remove configure check prohibiting threaded libpython on OpenBSD.	2015-05-26 22:14:59 -04:00
configure.in	Windows also needs an override of the shared libpython detection	2015-05-02 13:23:16 -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

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/.