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David Rowley 6c00d2c9d4 Tidy up join_search_one_level code 
The code in join_search_one_level was a bit convoluted.  With a casual
glance, you might think that other_rels_list was being set to something
other than joinrels[1] when level == 2, however, joinrels[level - 1] is
joinrels[1] when level == 2, so nothing special needs to happen to set
other_rels_list.  Let's clean that up to avoid confusing anyone.

In passing, we may as well modernize the loop in
make_rels_by_clause_joins() and instead of passing in the ListCell to
start looping from, let's just pass in the index where to start from and
make use of for_each_from().  Ever since 1cff1b95a, Lists are arrays
under the hood. lnext() and list_head() both seem a little too linked-list
like.

Author: Alex Hsieh, David Rowley, Richard Guo
Reviewed-by: Julien Rouhaud
Discussion: https://postgr.es/m/CANWNU8x9P9aCXGF%3DaT-A_8mLTAT0LkcZ_ySYrGbcuHzMQw2-1g%40mail.gmail.com
2023-08-06 21:51:54 +12:00
config All supported systems have locale_t. 2023-07-09 11:55:18 +12:00
contrib Disallow replacing joins with scans in problematic cases. 2023-07-28 15:45:00 +09:00
doc Doc: update documentation for creating custom scan paths. 2023-08-03 17:45:00 +09:00
src Tidy up join_search_one_level code 2023-08-06 21:51:54 +12:00
.cirrus.yml cirrus/freebsd: define ENFORCE_REGRESSION_TEST_NAME_RESTRICTIONS 2023-07-03 10:35:48 +02:00
.dir-locals.el
.editorconfig
.git-blame-ignore-revs Add b334612b8 to .git-blame-ignore-revs. 2023-06-20 09:52:52 -04:00
.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 --disable-thread-safety and related code. 2023-07-12 08:20:43 +12:00
configure.ac Remove --disable-thread-safety and related code. 2023-07-12 08:20:43 +12:00
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
Makefile
meson_options.txt meson: Attach colon to keyword argument 2023-06-29 12:53:41 +02:00
meson.build meson: Tie adding C++ support to the llvm Meson option 2023-07-12 16:26:02 -07:00
README
README.git

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/.