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Tom Lane f0d0394e84 Fix parsing of ISO-8601 interval fields with exponential notation. 
Historically we've accepted interval input like 'P.1e10D'.  This
is probably an accident of having used strtod() to do the parsing,
rather than something anyone intended, but it's been that way for
a long time.  Commit e39f99046 broke this by trying to parse the
integer and fractional parts separately, without accounting for
the possibility of an exponent.  In principle that coding allowed
for precise conversions of field values wider than 15 decimal
digits, but that does not seem like a goal worth sweating bullets
for.  So, rather than trying to manage an exponent on top of the
existing complexity, let's just revert to the previous coding that
used strtod() by itself.  We can still improve on the old code to
the extent of allowing the value to range up to 1.0e15 rather than
only INT_MAX.  (Allowing more than that risks creating problems
due to precision loss: the converted fractional part might have
absolute value more than 1.  Perhaps that could be dealt with in
some way, but it really does not seem worth additional effort.)

Per bug #17795 from Alexander Lakhin.  Back-patch to v15 where
the faulty code came in.

Discussion: https://postgr.es/m/17795-748d6db3ed95d313@postgresql.org
2023-02-20 16:55:59 -05:00
config autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
contrib Limit memory usage of pg_walinspect functions. 2023-02-20 11:07:24 -08:00
doc Redesign archive modules 2023-02-17 14:26:42 +09:00
src Fix parsing of ISO-8601 interval fields with exponential notation. 2023-02-20 16:55:59 -05:00
.cirrus.yml ci: freebsd: stop postgres instance on failure, to prevent log upload failures 2023-02-06 15:41:38 -08:00
.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 250c8ee07e to git-blame-ignore-revs 2023-01-13 15:33:49 -08:00
.gitattributes Remove trailing whitespace from *.sgml files. 2022-04-20 11:04:49 -04:00
.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 obsolete platforms from ps_status.c. 2023-02-17 15:18:18 +13:00
configure.ac Remove obsolete platforms from ps_status.c. 2023-02-17 15:18:18 +13:00
COPYRIGHT Update copyright for 2023 2023-01-02 15:00:37 -05:00
GNUmakefile.in Integrate pg_bsd_indent into our build/test infrastructure. 2023-02-12 12:22:21 -05:00
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_options.txt Update copyright for 2023 2023-01-02 15:00:37 -05:00
meson.build Remove obsolete platforms from ps_status.c. 2023-02-17 15:18:18 +13:00
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

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/.