SELECT a.name, GROUP_CONCAT( b.name SEPARATOR ' ' ) AS sons FROM `table_name` AS a LEFT JOIN `table_name` AS b ON b.f_id = a.id WHERE a.f_id =0 GROUP BY b.f_id
20,398
社区成员
19,656
社区内容
加载中
试试用AI创作助手写篇文章吧