group by clause ordering

Is there any way in which
select <blar>
from <blar>
group by a,b

would not give the same results as same query with the columns in the group by clause changed

select <blar>
from <blar>
group by b,a

Ignoring ordering.
I am thinking about null columns, duplicate rows min max, count functions here. Received on Thu Apr 26 2007 - 08:03:29 CDT