Thank you Chanty 4u for the reply.
I looked at the 2 links you posted and am still unclear about how to use this load function in my load script.
This example came from Qlik Community:
load dual ( string,numrep ) as DayOfWeek inline
load Date, weekday(Date) as DayOfWeek from afile.csv;
Now, in my application, the string value would be grade, but I don't know what value to use for the second argument of dual (numrep in the example).