7ed8ce8a46
Normally this case isn't even reachable by non-superusers, since permissions checks prevent naming such a table. However, it is possible to make it happen by altering a parent table whose child is another session's temp table. We definitely can't support any such ALTER that requires modifying the contents of such a table, since we lack access to the other session's temporary-buffer pool. But there seems no good reason to allow it even if it'd only require changing catalog contents. One reason not to allow it is that we'd rather not expose the implementation-dependent behavior of whether a specific ALTER requires touching the table contents. Another is that there may be (in future, even if not today) optimizations that assume that a session's own temp tables won't be modified by other sessions. Hence, add a RELATION_IS_OTHER_TEMP() check to all the places where ALTER TABLE currently does CheckTableNotInUse(). (I looked through all other callers of CheckTableNotInUse(), and they seem OK already.) Per bug #18492 from Alexander Lakhin. Back-patch to all supported branches. Discussion: https://postgr.es/m/18492-c7a2634bf4968763@postgresql.org |
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| config | ||
| contrib | ||
| doc | ||
| src | ||
| .cirrus.star | ||
| .cirrus.tasks.yml | ||
| .cirrus.yml | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| COPYRIGHT | ||
| GNUmakefile.in | ||
| HISTORY | ||
| Makefile | ||
| README.md | ||
| aclocal.m4 | ||
| configure | ||
| configure.ac | ||
| meson.build | ||
| meson_options.txt | ||
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/.