hi all,

I am really do not know how to get this. Tried all types of queries.
The requirement is as below

itemid maxqty Mdate (date is when the max qty went out)
001 5 5/1/2004
002 2 5/10/2004

The actual table has all transaction data as below.
itemid qty date
001 5 5/1/2004
001 3 5/2/2004
001 3 5/3/2004
001 2 5/4/2004
002 0 5/1/2004
......
002 2 5/10/2004

one query is
select itemid,max(qty) from mTran

with the above require which date it occurred.

Please help

Cap2010

captain_2010@yahoo.com (captain) wrote in message news:<27aae5ab.0407272342.4d8e5bb5@posting.google. com>...
> hi all,
>
> I am really do not know how to get this. Tried all types of queries.
> The requirement is as below
>
> itemid maxqty Mdate (date is when the max qty went out)
> 001 5 5/1/2004
> 002 2 5/10/2004
>
> The actual table has all transaction data as below.
> itemid qty date
> 001 5 5/1/2004
> 001 3 5/2/2004
> 001 3 5/3/2004
> 001 2 5/4/2004
> 002 0 5/1/2004
> .....
> 002 2 5/10/2004
>
> one query is
> select itemid,max(qty) from mTran
>
> with the above require which date it occurred.
>
> Please help
>
> Cap2010

Think Relational.

the query "select itemid,max(qty) from mTran" returns rows and
columns, ie a table. Use that to go back to your original table and
get the result you want. (The term for this, if you want to look it
up, is an IN-LINE VIEW.)

Glad to see you found the c.d.o.misc group.

Ed

"captain" <captain_2010@yahoo.com> a écrit dans le message de
news:27aae5ab.0407272342.4d8e5bb5@posting.google.c om...
> hi all,
>
> I am really do not know how to get this. Tried all types of queries.
> The requirement is as below
>
> itemid maxqty Mdate (date is when the max qty went out)
> 001 5 5/1/2004
> 002 2 5/10/2004
>
> The actual table has all transaction data as below.
> itemid qty date
> 001 5 5/1/2004
> 001 3 5/2/2004
> 001 3 5/3/2004
> 001 2 5/4/2004
> 002 0 5/1/2004
> .....
> 002 2 5/10/2004
>
> one query is
> select itemid,max(qty) from mTran
>
> with the above require which date it occurred.
>
> Please help
>
> Cap2010

Try this:

select itemid, quantity, mdate
from (select itemid, qty, mdate,
rank() over (partition by itemid order by qty desc) rn
from mtran)
where rn=1
/

--
Regards
Michel Cadot

this also works,

select * from mtran where
(itemid,qty) in (select itemid,max(qty) from mtran group by itemid)