答案 0 :(得分:0)
更改设备方向时会发生布局更改。您是否尝试在更改方向后使用select a.countryName,
b.proviceName,
c.cityName
from ((country a
left join province b on a.countryId = b.countryId)
left join city c on a.countryId = c.countryId)
where id = 3;
?