select a.`name`,group_concat(b.name SEPARATOR‘、‘) as persons from `group` as a,`person` as b,`persongroup` as c where a.id = c.groupid and b.id = c.personid group by a.`name`
使用group_concat最终得到的数据效果:重复的name 通过group_by已经过滤掉了,同时被过滤数据的persons字段内容进行了追加。
时间: 2024-08-06 11:51:04