amPiguous!

[Dan Bolser]

Why are columns included in the join between two tables ambigious?

It seems that they should *not* be ambigious!

Like this

select pk from a inner join b using (pk);

ERROR 1052 (23000): Column 'pk' in field list is ambiguous!!!

Is this a bug, or is it like this for a reason? It drives me nuts, because
it is not ambigious (as far as I can tell). Am I a fool?