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Peter Geoghegan aa210e0c12 Fix nbtree backward scan race condition comments. 
Remove comments that supposed that holding a pin was a useful interlock
for _bt_walk_left().  There are times when _bt_walk_left() doesn't hold
either a lock or a pin on any page, so clearly this can't be true.
_bt_walk_left() is even prepared to deal with concurrent deletion of
both the original page and any pages to its left.

Oversight in commit 2ed5b87f96.
 		2023-12-08 15:37:53 -08:00
config Remove distprep 2023-11-06 15:18:04 +01:00
contrib Optimize nbtree backward scan boundary cases. 2023-12-08 11:05:17 -08:00
doc Allow parallel CREATE INDEX for BRIN indexes 2023-12-08 18:15:26 +01:00
src Fix nbtree backward scan race condition comments. 2023-12-08 15:37:53 -08:00
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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.

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, and related software, may be
obtained at https://www.postgresql.org/download/.  For more information
look at our web site located at https://www.postgresql.org/.