sql - ORA-00933 与内部联接混淆和 "as"

Question

我有一个使用内连接从两个表获取数据的查询，但我收到错误SQL命令未正确结束，并在“as”下有一个星号:

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.

对此，我认为 AS 不会成为问题，因为它只是引用别名，但我很困惑为什么会出现这种情况。

Answer 1

只需删除 AS 关键字

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;