查詢加入或不加入？

Question

我是新來的sql，什麼是

select vehicle.plates, make, model 
from vehicle 
    join registration on registration.plates = vehicle.plates 
where country = 'Japan'; 

而且

select vehicle.plates, make, model 
from registration, vehicle 
where registration.plates = vehicle.plates and country=’Japan’; 

Answer 1

第一個查詢的區別是ANSI標準，另一種是沒有。

儘管如此，查詢應該返回相同的結果。