ORA - 00933 confusion with inner join and “as”

问题

I have this query of getting data from two tables using an inner join, but I get the error SQL command not properly ended with an asterix under "as":

select P.carrier_id, O.order_id, O.aircraft_id, O.quantity

from orderline AS O

inner join purchaseorder AS P

on O.order_id = P.carrier_id;

the error:

from orderline AS O ( with an asterix under AS)


Error at line 2
Ora-00933: SQL command not properly ended.

In regards to this I thought that AS wouldn't be an issue as it's just referencing an alias, but I'm so confused as to why this is coming up.

回答1:

Just remove the AS keyword

select 
   P.carrier_id, 
   O.order_id, 
   O.aircraft_id, 
   O.quantity
from 
   orderline O
inner join purchaseorder P
   on O.order_id = P.carrier_id;

回答2:

You are not allowed to insert keyword as between table name and its alias.

来源：https://stackoverflow.com/questions/16111034/ora-00933-confusion-with-inner-join-and-as