From: | Bruce Momjian <bruce(at)momjian(dot)us> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | David Fetter <david(at)fetter(dot)org>, PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: PoC: Make it possible to disallow WHERE-less UPDATE and DELETE |
Date: | 2016-08-01 16:38:21 |
Message-ID: | 20160801163820.GB28246@momjian.us |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
On Thu, Jul 21, 2016 at 09:49:33AM -0400, Tom Lane wrote:
> David Fetter <david(at)fetter(dot)org> writes:
> > Please find attached a patch which makes it possible to disallow
> > UPDATEs and DELETEs which lack a WHERE clause. As this changes query
> > behavior, I've made the new GUCs PGC_SUSET.
>
> > What say?
>
> -1. This is an express violation of the SQL standard, and at least the
> UPDATE case has reasonable use-cases. Moreover, if your desire is to have
> training wheels for SQL, there are any number of other well-known gotchas
> that are just as dangerous, for example ye olde unintentionally-correlated
> subselect:
> https://www.postgresql.org/message-id/20160714135233.1410.92538%40wrigleys.postgresql.org
I am hoping for a "novice" mode that issues warnings about possible
bugs, e.g. unintentionally-correlated subselect, and this could be part
of that.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ As you are, so once was I. As I am, so you will be. +
+ Ancient Roman grave inscription +
From | Date | Subject | |
---|---|---|---|
Next Message | Robert Haas | 2016-08-01 17:07:01 | Re: pg_replication_origin_xact_reset() and its argument variables |
Previous Message | Bruce Momjian | 2016-08-01 16:25:08 | Re: pg_size_pretty, SHOW, and spaces |