數據庫（MySQL 8.0）--5

注：爲了方便理解下面的代碼都是分行書寫，如果一次拷貝在mysql可能報錯，請一行一行拷貝，或者一次性拷貝後檢查格式（如添加或刪除空格） 舉例說明，下面這段代碼： select sheng.id as sid,sheng.title as stitle, shi.id as shiid,shi.title as shititle from areas as sheng inner join area

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