Re: optimizing select ... not in (select ...)

Can it be redone using NOT EXISTS?

> I have this query :
>
> select distinct on (Pictures.PictureID) * from Pictures where Pictures.PictureID not in (select distinct PictureID from Keywords);
>
> and I find it a bit slow. Does anybody have suggestions to run this
> faster ? (I have indexes on PictureID on both Pictures and Keywords)
>
> --
> Laurent Martelli
> laurent(at)aopsys(dot)com http://www.bearteam.org/~laurent/
>
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