Question

Here it’s my problem I’ve a list of the following measure :

src1   dst2   24th december 2009
src1   dst3   22th december 2009
src1   dst2   18th december 2009

I would like to have just the latest measures with a sql request -> 2 first lines in my case because the pairs(src and dst) aren’t the same.

I try to use DISTINCT but I have just the 2 first columns and I will all columns.
I try too GROUP BY but I hadn’t success.

Anyone can help me ?

Thx

Narglix

Answer 1

select src, dst, max(date) as Date
from MyTable
group by src, dst

Update:

select *
from MyTable t
inner join (
    select src, dst, max(date) as Date 
    from MyTable 
    group by src, dst 
) tm on t.src = tm.src and t.dst = tm.dst and t.Date = tm.Date