外连接在sqlserver和access之间的差异

access中的写法：

select * from

((spaceports as a left join flights as b on a.spaceport_id=b.departure_city)

left join passengers as c on b.flight_id = c.flight_id)

sqlserver中的写法：

select * from spaceports as a left join flights as b

on a.spaceport_id=b.departure_city

left join passengers as c on b.flight_id = c.flight_id