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Michael Paquier ca7a0d1d36 Fix two issues with HEADER MATCH in COPY 
072132f0 used the attnum offset to access the raw_fields array when
checking that the attribute names of the header and of the relation
match, leading to incorrect results or even crashes if the attribute
numbers of a relation are changed, like on a dropped attribute.  This
fixes the logic to use the correct attribute names for the header
matching requirements.

Also, this commit disallows HEADER MATCH in COPY TO as there is no
validation that can be done in this case.

The tests are expanded for HEADER MATCH with COPY FROM and dropped
columns, with cases where a relation has a dropped and re-added column,
as well as a reduced set of columns.

Author: Julien Rouhaud
Reviewed-by: Peter Eisentraut, Michael Paquier
Discussion: https://postgr.es/m/20220607154744.vvmitnqhyxrne5ms@jrouhaud
2022-06-23 10:49:20 +09:00
config Pre-beta mechanical code beautification. 2022-05-12 15:17:30 -04:00
contrib amcheck: Fix incorrect use of VARATT_IS_COMPRESSED. 2022-06-22 13:11:49 -04:00
doc Fix two issues with HEADER MATCH in COPY 2022-06-23 10:49:20 +09:00
src Fix two issues with HEADER MATCH in COPY 2022-06-23 10:49:20 +09:00
.cirrus.yml Make upgradecheck a no-op in MSVC's vcregress.pl 2022-04-02 12:06:11 +09:00
.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 23e7b38bf to git-blame-ignore-revs. 2022-05-12 15:22:20 -04:00
.gitattributes Remove trailing whitespace from *.sgml files. 2022-04-20 11:04:49 -04:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
aclocal.m4 Probe $PROVE not $PERL while checking for modules needed by TAP tests. 2021-11-22 12:54:52 -05:00
configure Stamp 15beta1. 2022-05-16 17:10:42 -04:00
configure.ac Stamp 15beta1. 2022-05-16 17:10:42 -04:00
COPYRIGHT Update copyright for 2022 2022-01-07 19:04:57 -05:00
GNUmakefile.in Run tests of libpq on installcheck-world, checkprep and check-world 2022-06-03 13:15:20 +09:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Dynamically find correct installation docs in Makefile. 2022-01-19 14:48:25 +01:00
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/.