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Tom Lane 584f17a906 Preserve RangeTblEntry.relid when expanding a view RTE. 
When the rewriter converts an RTE_RELATION RTE for a view into
an RTE_SUBQUERY RTE containing the view's defining query, leave
the relid field alone instead of zeroing it.  This allows the
planner to tell that the subquery came from a view rather than
having been written in-line, which is needed to support an
upcoming planner bug fix.  We cannot change the behavior of the
outfuncs/readfuncs code in released branches, so the relid field
will not survive in plans passed to parallel workers; therefore
this info should not be relied on in the executor.

This back-patches a portion of the data structure definitional
changes made in v16 and up by commit 47bb9db75.  It's being
committed separately for visibility in the commit log, but
with luck it will not actually matter to anyone.  While it's
not inconceivable that this change will break code expecting
relid to be zero in a subquery RTE, we can hope that such code
has already been adjusted to cope with v16 and up.

Reported-by: Duncan Sands <duncan.sands@deepbluecap.com>
Diagnosed-by: Tender Wang <tndrwang@gmail.com>
Author: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: Dean Rasheed <dean.a.rasheed@gmail.com>
Discussion: https://postgr.es/m/3518c50a-ab18-482f-b916-a37263622501@deepbluecap.com
Backpatch-through: 13-15
2025-03-12 11:28:04 -04:00
config Log LLVM library version in configure output. 2023-10-22 14:29:00 +13:00
contrib Handle default NULL insertion a little better. 2025-01-29 15:31:55 -05:00
doc Doc: improve description of window function processing. 2025-03-10 10:22:31 -04:00
src Preserve RangeTblEntry.relid when expanding a view RTE. 2025-03-12 11:28:04 -04:00
.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 Backpatch addition of .git-blame-ignore-revs 2022-08-05 19:36:24 +02:00
.gitattributes Exclude LLVM files from whitespace checks 2024-11-27 11:10:00 +01:00
.gitignore Add portlock directory to .gitignore 2022-11-26 07:47:06 -05:00
aclocal.m4 Probe $PROVE not $PERL while checking for modules needed by TAP tests. 2021-11-22 12:54:52 -05:00
configure Stamp 14.17. 2025-02-17 16:15:49 -05:00
configure.ac Stamp 14.17. 2025-02-17 16:15:49 -05:00
COPYRIGHT Update copyright for 2025 2025-01-01 11:21:54 -05:00
GNUmakefile.in Remove temporary portlock directory during make [dist]clean. 2022-11-26 10:30:53 -05:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
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/.