在MySQL连接3个表来选择字段

Question

我有数据库结构是怎样的图像下方

我想选择所有的街道，与街道名称，城市名称，省名。我的代码是这样的：

SELECT province.name as province, city.name as city, subdistrict.name as subdistrict 
    from provinces province, cities city, subdistricts subdistrict 
    WHERE province.id = city.id AND city.id = subdistrict.id; 

，但我只得到尽可能多的总省份的数据并非所有的街道数据

Answer 1

您基本的SQL缺少一个逗号，但一般应该工作。我强烈建议使用更现代化的连接语法： -

SELECT province.name AS province, 
     city.name AS city, 
     subdistrict.name AS subdistrict 
FROM provinces province 
INNER JOIN cities city 
ON province.id = city.id 
INNER JOIN subdistricts subdistrict 
ON city.id = subdistrict.id; 

然而，从你的描述，我不能确定，如果你正在尝试做一些汇集处理？