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We cannot use the generic array_desc approach with per-tuple nbtree posting list update metadata because array_desc can only deal with fixed width elements (e.g., page offset numbers). Using array_desc led to incorrect rmgr descriptions for updates from nbtree DELETE/VACUUM WAL records. To fix, add specialized code to describe the update metadata as array elements in desc output. We now iterate over the update metadata using an approach that matches related REDO routines. Also stop showing the updates offset number array separately in nbtree DELETE/VACUUM desc output. It's redundant information, since the same page offset numbers appear in the description of each individual update element. Also make some small tweaks to the way that we format arrays in all desc routines (not just nbtree desc routines) to make arrays a little less verbose. Oversight in commit 1c453cfd, which enhanced the nbtree rmgr desc routines. Author: Peter Geoghegan <pg@bowt.ie> Discussion: https://postgr.es/m/CAH2-WzkbYuvwYKm-Y-72QEh6SPMQcAo9uONv+mR3bMGcu9E_Cg@mail.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/.