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Tom Lane 5392dd3d2a Fix plpgsql's handling of -- comments following expressions. 
Up to now, read_sql_construct() has collected all the source text from
the statement or expression's initial token up to the character just
before the "until" token.  It normally tries to strip trailing
whitespace from that, largely for neatness.  If there was a "-- text"
comment after the expression, this resulted in removing the newline
that terminates the comment, which creates a hazard if we try to paste
the collected text into a larger SQL construct without inserting a
newline after it.  In particular this caused our handling of CASE
constructs to fail if there's a comment after a WHEN expression.

Commit 4adead1d2 noticed a similar problem with cursor arguments,
and worked around it through the rather crude hack of suppressing
the whitespace-trimming behavior for those.  Rather than do that
and leave the hazard open for future hackers to trip over, let's
fix it properly.  pl_scanner.c already has enough infrastructure
to report the end location of the expression's last token, so
we can copy up to that location and never collect any trailing
whitespace or comment to begin with.

Erik Wienhold and Tom Lane, per report from Michal Bartak.
Back-patch to all supported branches.

Discussion: https://postgr.es/m/CAAVzF_FjRoi8fOVuLCZhQJx6HATQ7MKm=aFOHWZODFnLmjX-xA@mail.gmail.com
 		2024-04-10 15:45:58 -04:00
config Update config.guess and config.sub 2024-04-09 14:21:57 +02:00
contrib Fixup various StringInfo function usages 2024-04-10 11:53:32 +12:00
doc Doc: Update ulinks to RFC documents to avoid redirect 2024-04-10 13:53:25 +02:00
src Fix plpgsql's handling of -- comments following expressions. 2024-04-10 15:45:58 -04:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
.cirrus.tasks.yml Add tests for libpq gssencmode and sslmode options 2024-04-08 02:49:32 +03:00
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HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Remove AIX support 2024-02-28 15:17:23 +04:00
README.md Revise the style of a paragraph in README.md. 2024-03-21 10:16:41 -05:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Optimize pg_popcount() with AVX-512 instructions. 2024-04-06 21:56:23 -05:00
configure.ac Optimize pg_popcount() with AVX-512 instructions. 2024-04-06 21:56:23 -05:00
meson.build Optimize pg_popcount() with AVX-512 instructions. 2024-04-06 21:56:23 -05:00
meson_options.txt Add backend support for injection points 2024-01-22 10:15:50 +09:00

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/.