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Peter Geoghegan 81a25790f1 Clarify nbtree array exhaustion comments. 
Strictly speaking, we only need to make sure to leave the scan's array
keys in their final positions (final for the current scan direction) to
handle SAOP array exhaustion because btgettuple might only return a
subset of the items for the final page (final for the current scan
direction), before the scan changes direction.  While it's typical for
so->currPos to be invalidated shortly after the scan's arrays are first
exhausted, and while so->currPos invalidation does obviate the need to
leave the scan's arrays in any particular state, we can't rely on any of
that actually happening when handling array exhaustion.  Adjust comments
to make all of that a lot clearer.

Oversight in commit 5bf748b8, which enhanced nbtree ScalarArrayOp
execution.
2024-10-30 13:43:49 -04:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config Simplify checking for xlocale.h 2024-10-01 07:23:45 -04:00
contrib Remove unused #include's from contrib, pl, test .c files 2024-10-28 08:02:17 +01:00
doc Replicate generated columns when specified in the column list. 2024-10-30 12:36:26 +05:30
src Clarify nbtree array exhaustion comments. 2024-10-30 13:43:49 -04:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
.cirrus.tasks.yml Add PG_TEST_PG_COMBINEBACKUP_MODE to CI tasks 2024-09-10 16:30:38 +02:00
.cirrus.yml ci: Make compute resources for CI configurable 2023-08-23 15:15:28 -07:00
.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 Add commit 7f7474a8e4 to .git-blame-ignore-revs. 2024-10-14 15:09:39 -05:00
.gitattributes Remove non-existing file from .gitattributes 2024-02-16 11:39:09 +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 Raise the minimum supported OpenSSL version to 1.1.1 2024-10-24 15:20:19 +02:00
configure.ac Raise the minimum supported OpenSSL version to 1.1.1 2024-10-24 15:20:19 +02:00
COPYRIGHT Update copyright for 2024 2024-01-03 20:49:05 -05:00
GNUmakefile.in Allow selecting the git revision to be packaged by "make dist". 2024-05-03 11:08:50 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Remove AIX support 2024-02-28 15:17:23 +04:00
meson.build Raise the minimum supported OpenSSL version to 1.1.1 2024-10-24 15:20:19 +02:00
meson_options.txt Remove spinlocks and atomics from meson_options.txt. 2024-07-30 23:37:14 +12:00
README.md Revise the style of a paragraph in README.md. 2024-03-21 10:16:41 -05:00

README.md

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.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.

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/.