Question

I have a MySQL table with following data (sample);

UserId  -   DeviceId    -   StartDate   -   EndDate
------------------------------------------------------
1001        D119822         11/27/2011      12/02/2011
1001        D198726         11/27/2011      12/02/2011
1001        D552833         11/27/2011      12/02/2011
1001        D980993         11/27/2011      12/02/2011

I have searched for some kind of row_num or ordinal_position thing, but found nothing.
How could I get the latest record from the above table without adding a serial/auto increment number column?

Answer 1

Try this query, i have tested it and it works for me.

select s.*, @rownum:=@rownum+1 as rank
from your_table s, (SELECT @rownum:=0) r
order by rank DESC
LIMIT 1;