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Tom Lane c7b7311f61 Avoid doing catalog lookups in postgres_fdw's conversion_error_callback. 
As in 50371df26, this is a bad idea since the callback can't really
know what error is being thrown and thus whether or not it is safe
to attempt catalog accesses.  Rather than pushing said accesses into
the mainline code where they'd usually be a waste of cycles, we can
look at the query's rangetable instead.

This change does mean that we'll be printing query aliases (if any
were used) rather than the table or column's true name.  But that
doesn't seem like a bad thing: it's certainly a more useful definition
in self-join cases, for instance.  In any case, it seems unlikely that
any applications would be depending on this detail, so it seems safe
to change.

Patch by me.  Original complaint by Andres Freund; Bharath Rupireddy
noted the connection to conversion_error_callback.

Discussion: https://postgr.es/m/20210106020229.ne5xnuu6wlondjpe@alap3.anarazel.de
2021-07-06 12:36:12 -04:00
config Update config.guess and config.sub 2021-04-21 16:33:40 +02:00
contrib Avoid doing catalog lookups in postgres_fdw's conversion_error_callback. 2021-07-06 12:36:12 -04:00
doc Doc: add info about timestamps with fractional-minute UTC offsets. 2021-07-06 10:34:51 -04:00
src Refactor function parse_subscription_options. 2021-07-06 07:46:50 +05:30
.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 pgindent commit to git-blame-ignore-revs file. 2021-06-28 09:22:24 -07:00
.gitattributes gitattributes: Add new entry to silence whitespace error 2021-06-05 07:57:31 +02:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
aclocal.m4 Remove configure-time probe for DocBook DTD. 2020-11-30 15:24:13 -05:00
configure Stamp HEAD as 15devel. 2021-06-28 11:31:16 -04:00
configure.ac Stamp HEAD as 15devel. 2021-06-28 11:31:16 -04:00
COPYRIGHT Update copyright for 2021 2021-01-02 13:06:25 -05:00
GNUmakefile.in add missing tag from commit b8c4261e5e 2021-07-01 15:47:46 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Canonicalize some URLs 2020-02-10 20:47:50 +01:00
README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00

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.

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/.