On Mon, Mar 19, 2012 at 06:41:39PM +0100, Marco Nenciarini wrote:
> Attached is v5, which should address all the remaining issues.
Looks clean to me.
> On Fri, Mar 16, 2012 at 11:33:12PM -0400, Noah Misch wrote:
> > If the cost doesn't exceed O(F log P), where F is the size of the FK table and
> > P is the size of the PK table, I'm not worried. If it can be O(F^2), we would
> > have a problem to be documented, if not fixed.
>
> We have rewritten the old query in a simpler way; now its cost is O(F log P).
> Here F must represent the size of the "flattened" table, that is, the total
> number of values that must be checked, which seems a reasonable assumption
> in any case.
Great; I find that approach easier to reason about.