Question

I have this simple SQL query which I am trying to run for a uni project. I’m getting the error in the title however I’ve ran a very similar query with no problem.

select booking.customer_id, booking_start_date
   SUM(total_cost) sales
from booking
order by 2 desc 

Thanks in advance.

Answer 1

You have missed a , after booking_start_date.

Try –

select booking.customer_id, 
       booking_start_date,
       SUM(total_cost) sales
from booking
GROUP BY booking.customer_id, booking_start_date
order by 2 desc