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Tom Lane 89b69db82a Allow examine_simple_variable() to work on INSERT RETURNING Vars. 
Since commit 599b33b94, this function assumed that every RTE_RELATION
RangeTblEntry would have an associated RelOptInfo.  But that's not so:
we only build RelOptInfos for relations that are scanned by the query.
In particular the target of an INSERT won't have one, so that Vars
appearing in an INSERT ... RETURNING list will not have an associated
RelOptInfo.  This apparently wasn't a problem before commit f7816aec2
taught examine_simple_variable() to drill down into CTEs containing
INSERT RETURNING, but it is now.

To fix, add a fallback code path that gets the userid to use directly
from the RTEPermissionInfo associated with the RTE.  (Sadly, we must
have two code paths, because not every RTE has a RTEPermissionInfo
either.)

Per report from Alexander Lakhin.  No back-patch, since the case is
apparently unreachable before f7816aec2.

Discussion: https://postgr.es/m/608a4886-6c60-0f9e-97d5-591256bd4150@gmail.com
2024-01-08 11:48:44 -05:00
config Add copyright notices to a few perl scripts that don't have them 2024-01-05 13:15:50 +00:00
contrib Fix integer-overflow problem in intarray's g_int_decompress(). 2024-01-07 15:19:50 -05:00
doc In plpgsql, allow %TYPE and %ROWTYPE to be followed by array decoration. 2024-01-04 15:24:15 -05:00
src Allow examine_simple_variable() to work on INSERT RETURNING Vars. 2024-01-08 11:48:44 -05:00
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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.

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/.