thanks for the clarification simon.
so if one table in a join does not have a histogram and the other table does, then the available histogram is used for both tables?
even then why total density and not range cell weight or frequency cell weight or range cell density if a particular value is sought?
also a statistics skew is due to ir-reconciliation between range cell density and total density?
in what kind of situation (join etc) are the two compared?
appreciate the insights.
