6c00d2c9d4
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
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/.