Question

I want to make a SQL query that shows me the article that generated most income. (in a shop)

    Table = orderrader

   rownumber    articlenumber   ordernumber price   amount
   1            11              1           8624    3
   2            6               1           4794    2
   3            17              1           8755    3
   4            1               1           7803    1
   5            16              1           8987    3
   6            10              1           4575    3
   7            4               1           8747    1
   8            15              1           5439    3
   9            11              2           8624    3
   10           1               2           7803    1

Answer 1

Following sql statement will return only one articlenumber with max revenue.

Select  articlenumber, sum(price*amount) as totalincome
from orderrader
group by articlenumber 
order by sum(price*amount) desc LIMIT 1