Subject RE: [IBO] FieldName in query with joins and aliases 4.7 bevahes different than 4.6
Author Jason Wharton
I said:
> It's an attempt to return the simplest identifier of
> the column necessary to uniquely describe each row.

What I mean is to uniquely identify the column in the row.

If you have two tables it is possible that they share a column with the same
name so this ensures that each column will be properly identified.