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Michael Paquier 846005e4f3 Relax INSERT privilege requirement for CTAS and matviews WITH NO DATA 
When specified, WITH NO DATA does not insert any data into the relation
created, so skip checking for the insert permissions.  With WITH DATA or
WITH NO DATA, it is always required for the user to have CREATE
privileges on the schema targeted for the relation.

Note that plain CREATE TABLE AS or CREATE MATERIALIZED VIEW queries have
begun to work accidentally without INSERT privilege checks as of
874fe3ae, while using EXECUTE or EXPLAIN ANALYZE would fail with the ACL
check, so this makes the behavior for all the command flavors consistent
with each other.  This is arguably a bug fix, but there have been no
complaints about the current behavior either so stable branches are not
changed.

While on it, document properly the privileges requirements for each
commands with more tests for all the scenarios possible, and avoid a
useless bulk-insert allocation when using WITH NO DATA.

Author: Bharath Rupireddy
Reviewed-by: Anastasia Lubennikova, Michael Paquier
Discussion: https://postgr.es/m/CALj2ACWc3N8j0_9nMPz9wcAUnVcdKHzFdDZJ3hVFNEbqtcyG9w@mail.gmail.com
2020-11-16 11:52:40 +09:00
config Remove the option to build thread_test.c outside configure. 2020-10-21 12:08:48 -04:00
contrib Handle equality operator in contrib/pg_trgm 2020-11-15 08:52:35 +03:00
doc Relax INSERT privilege requirement for CTAS and matviews WITH NO DATA 2020-11-16 11:52:40 +09:00
src Relax INSERT privilege requirement for CTAS and matviews WITH NO DATA 2020-11-16 11:52:40 +09:00
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configure Remove the option to build thread_test.c outside configure. 2020-10-21 12:08:48 -04:00
configure.ac Remove the option to build thread_test.c outside configure. 2020-10-21 12:08:48 -04:00
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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.

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/.