未找到FROM关键字 - ORA-00923

Question

我有这个简单的SQL查询,我试图为uni项目运行.我在标题中收到错误但是我运行了一个非常类似的查询没有问题.

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

提前致谢.

Answer 1

你已经错过了, 之后booking_start_date.

试试 -

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