THE SINGLE BEST STRATEGY TO USE FOR CLICKS

I analyzed this idea by using a t1.code with the really earliest rows along with the response is sub-2nd utilizing the exact same strategy.What I feel helps make my Top rated program so poor is that the rows becoming picked from t1 and t2 are a number of the most recent rows (major values for t1.id and t2.id). The question optimiser has assumed tha