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919f6d746e
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Alvaro Herrera 919f6d746e Improve multivariate statistics documentation 
Extended statistics commit 7b504eb282 did not include appropriate
documentation next to where we document regular planner statistics (I
ripped what was submitted before commit and then forgot to put it back),
and while later commit 2686ee1b7c added some material, it structurally
depended on what I had ripped out, so the end result wasn't proper.

Fix those problems by shuffling what was added by 2686ee1b7c and
including some additional material, so that now chapter 14 "Performance
Tips" now describes the types of multivariate statistics we currently
have, and chapter 68 "How the Planner Uses Statistics" shows some
examples.  The new text should be more in line with previous material,
in (hopefully) the appropriate depth.

While at it, fix a small bug in pg_statistic_ext docs: one column was
listed in the wrong spot.
2017-04-20 15:43:33 -03:00
config Remove use of Jade and DSSSL 2017-04-06 22:09:11 -04:00
contrib Fix new warnings from GCC 7 2017-04-17 13:59:46 -04:00
doc Improve multivariate statistics documentation 2017-04-20 15:43:33 -03:00
src Sync pg_ctl documentation and usage message with reality. 2017-04-20 14:41:55 -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 Remove use of Jade and DSSSL 2017-04-06 22:09:11 -04:00
configure.in Remove use of Jade and DSSSL 2017-04-06 22:09:11 -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/.