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Michael Paquier f7e954ad1c Rework code using list_delete_cell() in MergeAttributes 
When merging two attributes, we are sure that at least one remains.
However, when deleting one element in the attribute list we may finish
with an empty list returned as NIL by list_delete_cell(), but the code
failed to track that, which is not project-like.  Adjust the call so as
we check for an empty list, and make use of it in an assertion.

This has been introduced by e7b3349, when adding support for CREATE
TABLE OF.

Author: Mark Dilger
Reviewed-by: Álvaro Herrera, Michael Paquier
Discussion: https://postgr.es/m/CAE-h2TpPDqSWgOvfvSziOaMngMPwW+QZcmPpY8hQ_KOJ2+3hXQ@mail.gmail.com
 		2019-06-05 15:01:14 +09:00
config Update config.guess and config.sub 2019-04-27 14:25:00 +02:00
contrib Fix contrib/auto_explain to not cause problems in parallel workers. 2019-06-03 18:06:04 -04:00
doc Document piecemeal construction of partitioned indexes 2019-06-04 16:42:40 -04:00
src Rework code using list_delete_cell() in MergeAttributes 2019-06-05 15:01:14 +09:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.gitattributes Remove bug.template file 2019-05-20 08:58:21 +02:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
COPYRIGHT Update copyright for 2019 2019-01-02 12:44:25 -05:00
GNUmakefile.in Integrate cpluspluscheck into build system. 2019-05-31 12:36:17 -07:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Fix non-GNU makefiles for AIX make. 2017-11-30 00:57:22 -08:00
README Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
README.git Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
aclocal.m4 Fix configure's AC_CHECK_DECLS tests to work correctly with clang. 2018-11-19 12:01:47 -05:00
configure Stamp 12beta1. 2019-05-20 16:37:22 -04:00
configure.in Stamp 12beta1. 2019-05-20 16:37:22 -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:

	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/.