mirror/postgresql
2
0
Fork 0
mirror of https://git.postgresql.org/git/postgresql.git synced 2025-01-24 18:55:04 +08:00
Code Issues Packages Projects Releases Wiki Activity
37,184 Commits 37 Branches 638 Tags 426 MiB
C 85.5%
PLpgSQL 5.9%
Perl 4.2%
Yacc 1.3%
Makefile 0.7%
Other 2.2%
2b8f74d797
Go to file
Tom Lane 2b8f74d797 Improve documentation about CASE and constant subexpressions. 
The possibility that constant subexpressions of a CASE might be evaluated
at planning time was touched on in 9.17.1 (CASE expressions), but it really
ought to be explained in 4.2.14 (Expression Evaluation Rules) which is the
primary discussion of such topics.  Add text and an example there, and
revise the <note> under CASE to link there.

Back-patch to all supported branches, since it's acted like this for a
long time (though 9.2+ is probably worse because of its more aggressive
use of constant-folding via replanning of nominally-prepared statements).
Pre-9.4, also back-patch text added in commit 0ce627d4 about CASE versus
aggregate functions.

Tom Lane and David Johnston, per discussion of bug #12273.
2014-12-18 16:38:55 -05:00
config Silence Bison deprecation warnings 2014-06-03 22:36:35 -04:00
contrib Lock down regression testing temporary clusters on Windows. 2014-12-17 22:48:45 -05:00
doc Improve documentation about CASE and constant subexpressions. 2014-12-18 16:38:55 -05:00
src Recognize Makefile line continuations in fetchRegressOpts(). 2014-12-18 03:55:40 -05:00
.dir-locals.el
.gitattributes gitattributes: Ignore time zone data files for whitespace checks 2014-07-22 00:12:28 -04:00
.gitignore
aclocal.m4
configure Stamp 9.4.0. 2014-12-15 20:07:34 -05:00
configure.in Stamp 9.4.0. 2014-12-15 20:07:34 -05:00
COPYRIGHT
GNUmakefile.in Add TAP tests for client programs 2014-04-14 21:33:46 -04:00
HISTORY
Makefile
README
README.git

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/.