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Tom Lane a798660ebe Defend against bogus parameterization of join input paths.
An outer join cannot be formed using an input path that is parameterized
by a value that is supposed to be nulled by the outer join.  This is
obviously nonsensical, and it could lead to a bad plan being selected;
although currently it seems that we'll hit various sanity-check
assertions first.

I think that such cases were formerly prevented by the delay_upper_joins
mechanism, but now that that's gone we need an explicit check.

(Perhaps we should avoid generating baserel paths that could
lead to this situation in the first place; but it seems like
having a defense at the join level would be a good idea anyway.)

Richard Guo and Tom Lane, per report from Jaime Casanova

Discussion: https://postgr.es/m/CAJKUy5g2uZRrUDZJ8p-=giwcSHVUn0c9nmdxPSY0jF0Ov8VoEA@mail.gmail.com
2023-06-29 12:12:52 -04:00
config Fix typos in comments 2023-05-02 12:23:08 +09:00
contrib pg_stat_statements: Fix second comment related to entry resets 2023-06-29 09:17:26 +09:00
doc Doc: minor wording adjustments in transaction isolation discussion. 2023-06-28 12:48:14 -04:00
src Defend against bogus parameterization of join input paths. 2023-06-29 12:12:52 -04:00
.cirrus.yml ci: Remove OpenSSL 3.1 workaround for missing system CA 2023-04-24 11:40:23 +02:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
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.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 Stamp 16beta2. 2023-06-26 16:07:19 -04:00
configure.ac Stamp 16beta2. 2023-06-26 16:07:19 -04:00
COPYRIGHT Update copyright for 2023 2023-01-02 15:00:37 -05:00
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meson_options.txt meson: Attach colon to keyword argument 2023-06-29 12:53:41 +02:00
meson.build meson: Fix intl misspelling 2023-06-29 13:16:52 +02:00
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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/.