Slow query using sum in SQL Server

Question

I have a table in SQL Server 2014 with over 15 million rows and 49 columns. A simple query like this takes about 20 seconds to run. Is there any other ways to fine tune it? Date_run and skid are both indexed non clustered.

select skid, sum(price)
from stocktrack
where date_run >='2013-2-21'
  and date_run <='2013-3-21'
group by skid

Answer 1

Maybe you could reduce the amount of data to scan by partition the table on [date_run] column. It depends on the data variation in the column. You should get the execution plan before and after to check the behaviour.