有 city 表和 countrylanguage 表,有一个相同字段 countrycode,以下 SQL语句错误的是()
发布于 2021-04-23 16:06:33
【单选题】 A select * from city natural join countrylanguage; B select * from city join countrylanguage using(countrycode); C select * from city join countrylanguage; D select * from city join countrylanguage on(countrycode);