10/11   \_ thanks for the responses!
           Im using MySQL (pity me more) with no full outer join.
           I ended up first applying to both tables a (left) outer join with
           a temporary table containing all the values possible for the join
           condition. (b/c the cross join already doesnt contain the desired
           result). If anyone has more elegant suggestions for MySQL, pls
           tell. Thx-acheng
           [ reformatted ]