Re: BUG or strange behaviour of update on primary key - Mailing list pgsql-hackers

From Robert Haas
Subject Re: BUG or strange behaviour of update on primary key
Date
Msg-id CA+TgmobZc3ESA2ffCrQi-kA0HL7d=CMEzO4K11Qtkq1Ngy_s6w@mail.gmail.com
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In response to Re: BUG or strange behaviour of update on primary key  (desmodemone <desmodemone@gmail.com>)
Responses Re: BUG or strange behaviour of update on primary key
Re: BUG or strange behaviour of update on primary key
List pgsql-hackers
On Mon, Oct 17, 2011 at 7:30 PM, desmodemone <desmodemone@gmail.com> wrote:
> Seems an Oracle bug not Postgresql one!

I don't think it's a bug for it to work.  It'd probably work in
PostgreSQL too, if you inserted (2) first and then (1).  It's just
that, as Tom says, if you want it to be certain to work (rather than
depending on the order in which the rows are inserted), you need the
checks to be deferred.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


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