Hi All, Hope this is not too simple/dumb. I think I have a good idea of what an inner join of two SQL tables T1, T2 along a common field F is, but , for an exercise, I am looking for a precise definition. I am looking for a definition of this sort: (please correct if necessary or let me know if this is right) Inner Join function of relational tables T1, T2 along a common column F: It is a function that takes as inputs a pair T1, T2 of tables and spits out a table T3 so that: 1) F does not appear in T3. 2) T3 contains as columns : all columns other than F that are either in T1 or in T2 (or both). Each of these appears exactly once in T3. Is this right? Thanks.