oracle 多表插入 INSERT ALL

INSERT ALL

when sum_orders < 1000 then

into small_order

when sum_orders >= 1000  and sum_orders < 10000 then

into medium_order

else

into lager_order

select  custom_id, sum(order_total)  sum_orders  from orders group by  custom_id ;
  

注：all  多表插入標誌。