Hi

I am a student, I am trying to figure this out. I am trying to run a select statement that is asking for customer#, date, and total price of each order. ensure results are in chronological order based upon order date.

When I run the following with just a group by clause, it works. If I add order by orderdate, I get an error message that states SQL Error: ORA-00979: not a GROUP BY expression. Why is the order by...