SELECT t1.item_id, t1.dt, t1.text
FROM table AS t1
LEFT JOIN table AS t2 ON t1.item_id = t2.item_id AND t1.dt < t2.dt
WHERE t2.item_id IS NULL;

The situation is somewhat hard to describe, so please bare with me:

I am trying to group my results by the last activity on each row, my query
looks like this

select text, dt, item_id from table
where ....
group by item_id
order by dt DESC

here is an example record set.


text1,2006-06-28 10:00:00,4
text2,2006-06-28 10:15:00,4
text3,2006-06-28 10:30:00,8
text4,2006-06-28 11:00:00,8

the results from the above query would be:

text1,2006-06-28 10:00:00,4
text3,2006-06-28 10:30:00,8

my problem is that i want the other item to show up. the item with the most
recent DT. it is doing the grouping before it does the ordering. how do i
specify that I want to see the most recent info when it does the group?

thanks in advance.

Tanner

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