| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | David Fetter <david(at)fetter(dot)org> |
| Cc: | PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: PoC: Make it possible to disallow WHERE-less UPDATE and DELETE |
| Date: | 2016-07-21 13:49:33 |
| Message-ID: | 7111.1469108973@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
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 wouldn't have any objection to an extension that enforces rules like
these, but I don't think it belongs in core.
regards, tom lane
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