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Tom Lane 83472de606 Improve readability and error detection of array_in(). 
Rewrite array_in() and its subroutines so that we make only one
pass over the input text, rather than two.  This requires
potentially re-pallocing the working arrays values[] and nulls[]
larger than our initial guess, but that cost will hopefully be made
up by avoiding duplicate parsing.  In any case this coding seems
much clearer and more straightforward than what we had before.

This also fixes array_in() to reject non-rectangular input (that is,
different brace depths in different parts of the input) more reliably
than before, and to give a better error message when it does so.
This is analogous to the plpython and plperl fixes in 0553528e7 and
f47004add.  Like those PLs, we now accept input such as '{{},{}}'
as a valid representation of an empty array, which we did not before.

Additionally, reject explicit array subscripts that are outside the
integer range (previously you just got whatever atoi() converted
them to), and make some other minor improvements in error reporting.

Although this is arguably a bug fix, it's also a behavioral change
that might trip somebody up, so no back-patch.

Tom Lane, Heikki Linnakangas, and Jian He.  Thanks to Alexander Lakhin
for the initial report and for review/testing.

Discussion: https://postgr.es/m/2794005.1683042087@sss.pgh.pa.us
2023-11-13 13:01:51 -05:00
config Remove distprep 2023-11-06 15:18:04 +01:00
contrib meson: Install missing example files 2023-11-09 15:10:43 +01:00
doc Improve readability and error detection of array_in(). 2023-11-13 13:01:51 -05:00
src Improve readability and error detection of array_in(). 2023-11-13 13:01:51 -05:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
.cirrus.tasks.yml Use "template" data directory in tests 2023-08-24 14:38:02 -07:00
.cirrus.yml ci: Make compute resources for CI configurable 2023-08-23 15:15:28 -07:00
.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
.git-blame-ignore-revs Add "Add trailing commas to enum definitions" to .git-blame-ignore-revs 2023-10-26 13:03:43 +02:00
.gitattributes gitattributes: Ignore imported pg_bsd_indent code for whitespace checks 2023-02-22 09:00:28 +01:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Remove distprep 2023-11-06 15:18:04 +01:00
configure.ac Log OpenSSL version in ./configure output 2023-10-25 09:26:22 +09:00
COPYRIGHT Update copyright for 2023 2023-01-02 15:00:37 -05:00
GNUmakefile.in Remove distprep 2023-11-06 15:18:04 +01:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Dynamically find correct installation docs in Makefile. 2022-01-19 14:48:25 +01:00
meson.build meson: Install missing example files 2023-11-09 15:10:43 +01:00
meson_options.txt meson: Attach colon to keyword argument 2023-06-29 12:53:41 +02:00
README README: remove duplicate download link & mention related softw. 2023-11-08 16:36:18 -05:00
README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00

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.

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, and related software, may be
obtained at https://www.postgresql.org/download/.  For more information
look at our web site located at https://www.postgresql.org/.