I did not add indices on those columns assuming that being PK is enough? is
that right?

On Sat, Oct 2, 2010 at 3:08 PM, Drake Wilson <dr...@begriffli.ch> wrote:

> Quoth Fadhel Al-Hashim <fad...@gmail.com>, on 2010-10-02 14:51:59 +0300:
> > trying    A.x<>B.x    AND    A.y<>B.y      AND    A.z<>B.z   would just
> > hang.
>
> Huh?  How are you using that expression?
>
> I'd use DELETE FROM a WHERE NOT EXISTS (SELECT * FROM b WHERE a.key =
> b.key)
> with a suitable composite equality in the subselect.
>
> > Is my data too big for SQLIte? is it really hanging or it could be taking
> 3
> > days?
>
> Table A and (particularly) table B both have indices on those columns,
> right?
>
>   ---> Drake Wilson
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