Hi Timour, In Helsinki, we've noted the following:

MWL#90: Subqueries: Inside-out execution for non-semijoin materialized subqueries in WHERE (4K diff); Critical task = Get the code reviewed/pushed TODO: - Timour will tell the "obvious things to improve"; Timour 1 day

I'm going to need those "obvious things" fairly soon. Do you need to have anything as a prerequisite to produce the list? BR Sergey -- Sergey Petrunia, Software Developer Monty Program AB, http://askmonty.org Blog: http://s.petrunia.net/blog