Question

I hv a table like this

Model     Qty        Date
ABC        1         20110102
ABC       -1         20110105
QWE        1         20110103
ZXC        1         20110103
ABC        1         20110110
QWE       -1         20110110

I wish to hv the final output like this:-

Model     Qty        Date
ZXC        1         20110103
ABC        1         20110110

How can I do this via SQL ?

Thanks

Answer 1

You want the sum of the Qty and the latest Date for each Model:

SELECT Model, SUM(Qty), MAX(Date)
FROM YourTable
GROUP BY Model
HAVING SUM(Qty) <> 0

QWE has a sum of Qty = 0 and therefore should not be returned, right?