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Peter Eisentraut 3d092fe540 Avoid unnecessary catalog updates in ALTER SEQUENCE 
ALTER SEQUENCE can do nontransactional changes to the sequence (RESTART
clause) and transactional updates to the pg_sequence catalog (most other
clauses).  When just calling RESTART, the code would still needlessly do
a catalog update without any changes.  This would entangle that
operation in the concurrency issues of a catalog update (causing either
locking or concurrency errors, depending on how that issue is to be
resolved).

Fix by keeping track during options parsing whether a catalog update is
needed, and skip it if not.

Reported-by: Jason Petersen <jason@citusdata.com>
2017-05-02 10:41:48 -04:00
config Remove use of Jade and DSSSL 2017-04-06 22:09:11 -04:00
contrib postgres_fdw: Fix join push down with extensions 2017-04-24 22:50:07 -04:00
doc doc: Update ALTER SEQUENCE claims about changes being nontransactional 2017-05-02 10:34:49 -04:00
src Avoid unnecessary catalog updates in ALTER SEQUENCE 2017-05-02 10:41:48 -04:00
.dir-locals.el emacs: Set indent-tabs-mode in perl-mode 2015-04-12 23:53:23 -04:00
.gitattributes Remove contrib/tsearch2. 2017-02-13 11:06:11 -05:00
.gitignore Allow .so minor version numbers above 9 in .gitignore. 2016-08-15 17:35:35 -04:00
aclocal.m4 ICU support 2017-03-23 15:28:48 -04:00
configure Revert "Use pselect(2) not select(2), if available, to wait in postmaster's loop." 2017-04-24 18:29:03 -04:00
configure.in Revert "Use pselect(2) not select(2), if available, to wait in postmaster's loop." 2017-04-24 18:29:03 -04:00
COPYRIGHT Update copyright for 2017 2017-01-03 12:37:53 -05:00
GNUmakefile.in Have "make coverage" recurse into contrib as well 2016-09-05 18:44:36 -03:00
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/.