From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | Gurjeet Singh <singh(dot)gurjeet(at)gmail(dot)com>, PGSQL Bugs <pgsql-bugs(at)postgresql(dot)org> |
Subject: | Re: superuser unable to modify settings of a system table |
Date: | 2010-06-04 21:13:34 |
Message-ID: | 23774.1275686014@sss.pgh.pa.us |
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Lists: | pgsql-bugs |
Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> Is there really a use case for users fiddling with pg_proc, pg_class,
> etc. directly?
There's a use case for *superusers* to fiddle with them, yes.
(Superusers are presumed to be adults.) I think I recommend a quick
UPDATE on some catalog at least once a month on the lists.
You might care to consider the fact that no modern Unix system prevents
root from doing rm -rf /, even though that's "obviously" disastrous.
Yet (stretching the analogy all out of shape) there's no convenient user
tool for rearranging the contents of all the inodes on a filesystem.
> At any rate, I'd be happy to drop that part of the proposal. It would
> be a step forward just to permit (even without
> allow_system_table_mods) those changes which don't alter the structure
> of the catalog. For ALTER TABLE, the SET STATISTICS, (RE)SET
> (attribute_option), SET STORAGE, CLUSTER ON, SET WITHOUT CLUSTER, and
> (RE)SET (reloptions) forms are all things that fall into this
> category, I believe.
It would be far less work to just drop allow_system_table_mods to SUSET.
And we wouldn't get questions about which forms of ALTER TABLE require
it.
regards, tom lane
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