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Tom Lane cfb7559083 Doc: improve documentation of configuration settings that have units.
When we added the GUC units feature, we didn't make any great effort
to adjust the documentation of individual GUCs; they tended to still
say things like "this is the number of milliseconds that ...", even
though users might prefer to write some other units, and SHOW might
even show the value in other units.  Commit 6c9fb69f2 made an effort
to improve this situation, but I thought it made things less readable
by injecting units information in mid-sentence.  It also wasn't very
consistent, and did not touch all the GUCs that have units.

To improve matters, standardize on the phrasing "If this value is
specified without units, it is taken as <units>".  Also, try to
standardize where this is mentioned, right before the specification
of the default.  (In a couple of places, doing that would've required
more rewriting than seemed justified, so I wasn't 100% consistent
about that.)  I also tried to use the phrases "amount of time",
"amount of memory", etc rather than describing the contents of GUCs
in other ways, as those were the majority usage in places that weren't
overcommitting to a particular unit.  (I left "length of time" alone
in a couple of places, though.)

I failed to resist the temptation to copy-edit some awkward text, too.

Backpatch to v12, like 6c9fb69f2, mainly because v12 hasn't diverged
much from HEAD yet.

Discussion: https://postgr.es/m/15882.1571942223@sss.pgh.pa.us
2019-10-26 12:30:44 -04:00
config Simplify PGAC_STRUCT_TIMEZONE Autoconf macro 2019-10-07 16:47:23 +02:00
contrib Make the order of the header file includes consistent in contrib modules. 2019-10-24 08:05:34 +05:30
doc Doc: improve documentation of configuration settings that have units. 2019-10-26 12:30:44 -04:00
src Remove obsolete information schema tables 2019-10-25 21:37:14 +02:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.gitattributes Add XSL stylesheet to fix up SVG files 2019-06-19 21:26:42 +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 Add "headerscheck" script to test header-file compilability under C. 2019-08-19 14:22:56 -04:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
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 Use CFLAGS_SL while probing linkability of libperl. 2019-10-21 13:52:25 -04:00
configure.in Use CFLAGS_SL while probing linkability of libperl. 2019-10-21 13:52:25 -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/.