Re: NOT IN performance problem

> I'm not sure what you want since your query doesn't correspond to what
> you are saying you want. Therefore no sample just a general statement,
> use minus.
>
> > SELECT personid FROM phonenumber WHERE personid NOT IN (
> > SELECT personid FROM person);
> >
> > I'm wondering how I could restructure or rewrite my query ("who doesn't have
> > any phoinenumbers?") to run faster,
> > or if there is anything else I can do to optimize the query?

I'm sorry. I miss-wrote.

It should be:

SELECT personid FROM person WHERE personid NOT IN (

   SELECT personid FROM phonenumber)    

Thanks!

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/Nils Höglund, Naqua KB

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