Re: BUG #4220: delete statement deleted too many rows

Wow, I want it to violate the spec so I can get my rows back! :)
I understand the problem and why it did what it did now though.

Thanks for your help,

Lon

On Wed, Jun 4, 2008 at 1:08 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:

> hubert depesz lubaczewski <depesz(at)depesz(dot)com> writes:
> > On Wed, Jun 04, 2008 at 06:46:42PM +0000, Lon Varscsak wrote:
> >> delete from customer_transactions_detail where transaction_id in (select
> >> transaction_id from test);
> >> The transaction_id column does NOT exist in the temporary table named
> >> 'test'). I would think this would just result in an error, instead it
> >> delete all rows in the customer_transactions_detail table.
>
> > i wrote about it in more details in here:
> > http://www.depesz.com/index.php/2007/09/06/postgresql-gotchas/
>
> This isn't a "postgres gotcha", it's a "SQL standard gotcha". Any DBMS
> that fails to execute the query exactly that way is violating the spec.
>
> regards, tom lane
>