Question

I have have a query that returns sales total per vendor and location. How would I add a column for percentage of total sales for the date selected. Using sql 2005

  SELECT vendor,
         location,
         sum(ExtPrice) as total   
    FROM [database].[dbo].[GetOrderDetails]
   where processdate > '2010-05-08 16:35:46.500'
group by vendor,location
order by vendor asc  

Answer 1

You would want your code to look like the below, using a computed column

PercentageOfTotal AS (ExtPrice / sum(ExtPrice))

you could possibly use total in place of the sum(ExtPrice), but I’m not certain you can target another computed column. worth a shot though