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Amit Kapila 360392fa2a Avoid unconditionally filling in missing values with NULL in pgoutput. 
52e4f0cd4 introduced a bug in pgoutput in which missing values in tuples
were incorrectly filled in with NULL. The problem was the use of
CreateTupleDescCopy where CreateTupleDescCopyConstr was required, as the
former drops the constraints in the tuple description (specifically, the
default value constraint) on the floor.

The bug could result in incorrectness when a table replicated via
`REPLICA IDENTITY FULL` underwent a schema change that added a column
with a default value. The problem is that in such cases updates fill NULL
values in old tuples for missing columns for default values. Then on the
subscriber, we failed to find a matching tuple and missed updating the
required row.

Author: Nikhil Benesch
Reviewed-by: Hou Zhijie, Amit Kapila
Backpatch-through: 15
Discussion: http://postgr.es/m/CAPWqQZTEpZQamYsGMn6ZDRvVywwpVPiKH6OY4KSgA+NmeqFNzA@mail.gmail.com
2023-11-27 08:49:55 +05:30
config Remove distprep 2023-11-06 15:18:04 +01:00
contrib Track statement entry timestamp in contrib/pg_stat_statements 2023-11-27 02:52:17 +02:00
doc Track statement entry timestamp in contrib/pg_stat_statements 2023-11-27 02:52:17 +02:00
src Avoid unconditionally filling in missing values with NULL in pgoutput. 2023-11-27 08:49:55 +05:30
.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 Replace Gen_dummy_probes.sed with Gen_dummy_probes.pl 2023-11-14 10:27:10 +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: Document build targets, add 'help' target 2023-11-20 17:46:40 -08:00
meson_options.txt meson: Change default of 'selinux' feature option to auto 2023-11-17 10:23:02 -08:00
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/.