Question

I have the following query in DB2 but is not working, the problem is the max function but I,m not sure how to fix it.

SELECT CAR.VI max(CAR.ID),
TU.SOLD 
FROM P.CAR CAR, A.TU TU WHERE CAR.VI = TU.VI

'Table1'                                                              ' VI:     USER:  DATE:      DATE2:     STATUS:   ID'
' 2T1BU4  DEALER 2012-10-15 2012-10-15 CER       1 '
' 2T1BU4  DEALER 2012-10-15 2012-10-15 CER       2 '
' 2T1BU3  DEALER 2012-10-15 2012-10-15 DRA       1 '


' VI:     SOLD:'
' 2T1BU4  Y' 
' 2T1BU3  N'        

What I want to receive from my query will be something like this:

    ' VI:     USER:  DATE:      DATE2:     STATUS:   ID  SOLD'
' 2T1BU4  DEALER 2012-10-15 2012-10-15 CER       2   Y   '
' 2T1BU3  DEALER 2012-10-15 2012-10-15 DRA       1   N   '      

I want to get the VI that have the Max ID

Answer 1

You didn’t provide a lot of details but I am going to take a guess that you want this:

SELECT CAR.VI, max(CAR.ID), TU.SOLD 
FROM P.CAR CAR
INNER JOIN A.TU TU 
    ON CAR.VI = TU.VI
GROUP BY CAR.VI, TU.SOLD 

Or you can use a sub-query:

select c1.vi, c1.id, tu.sold
from 
(
    select max(id) id, vi
    from P.CAR
    group by vi
) c1
inner join A.TU TU 
    on c1.VI = TU.VI