Mysql 4.0 Get data of Min value

Question

is possible obtain records of the min id and grouped by a column? (in 4.0)

SELECT period, activity, date
FROM (
    SELECT MIN(id) id
    FROM Booking 
    WHERE place = 'CONFERENCE'          
    AND Date = '05 - Mar'   
    GROUP BY period
) A
INNER JOIN Booking B
USING (id) ORDER BY id

is possible equivalent to version 4.0?

Answer 1

I think the following gets the min of the id without a subquery:

select b1.period, b1.activity, b1.date
from booking b1 cross join
     booking b2
group by b1.id, b2.period
having b1.id = min(b2.id)

You can apply your where conditions as:

select b1.period, b1.activity, b1.date
from booking b1 cross join
     booking b2
where b2.place = 'CONFERENCE' and   
      b2.Date = '05 - Mar'   
group by b1.id, b2.period
having b1.id = min(b2.id);