| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: ALTER TABLE on system catalogs |
| Date: | 2018-08-20 13:34:50 |
| Message-ID: | 19365.1534772090@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andres Freund <andres(at)anarazel(dot)de> writes:
> On 2018-08-20 14:38:25 +0200, Peter Eisentraut wrote:
>> Do you have an alternative in mind?
> One is to just not do anything. I'm not sure I'm on board with the goal
> of changing things to make DDL on system tables more palatable.
FWIW, I agree with doing as little as possible here. I'd be on board
with Andres' suggestion of just swapping the two code stanzas so that
the no-op case doesn't error out. As soon as you go beyond that, you
are in wildly unsafe and untested territory.
regards, tom lane
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