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Michael Paquier 24843297a9 Adjust comments of CheckRelationTableSpaceMove() and SetRelationTableSpace() 
4c9c359, that introduced those two functions, has been overoptimistic on
the point that only ShareUpdateExclusiveLock would be required when
moving a relation to a new tablespace.  AccessExclusiveLock is a
requirement, but ShareUpdateExclusiveLock may be used under specific
conditions like REINDEX CONCURRENTLY where waits on past transactions
make the operation safe even with a lower-level lock.  The current code
does only the former, so update the existing comments to reflect that.

Once a REINDEX (TABLESPACE) is introduced, those comments would require
an extra refresh to mention their new use case.

While on it, fix an incorrect variable name.

Per discussion with Álvaro Herrera.

Discussion: https://postgr.es/m/20210127140741.GA14174@alvherre.pgsql
 		2021-01-29 13:59:18 +09:00
config Update copyright for 2021 2021-01-02 13:06:25 -05:00
contrib Retire pg_standby. 2021-01-29 14:09:41 +13:00
doc Remove documentation of waiting restore_command. 2021-01-29 14:16:29 +13:00
src Adjust comments of CheckRelationTableSpaceMove() and SetRelationTableSpace() 2021-01-29 13:59:18 +09:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.gitattributes gitattributes: Add new file 2019-11-12 08:13:55 +01:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
COPYRIGHT Update copyright for 2021 2021-01-02 13:06:25 -05:00
GNUmakefile.in Make install-tests target work with vpath builds 2020-05-31 18:33:00 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Canonicalize some URLs 2020-02-10 20:47:50 +01:00
README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00
aclocal.m4 Remove configure-time probe for DocBook DTD. 2020-11-30 15:24:13 -05:00
configure Introduce SHA1 implementations in the cryptohash infrastructure 2021-01-23 11:33:04 +09:00
configure.ac Introduce SHA1 implementations in the cryptohash infrastructure 2021-01-23 11:33:04 +09:00

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/.