Question

关于MySQL的concat函数的一个，该怎么解决

Answer 1

SELECT a.*,group_concat(b.picture_path) FROM ep_pollution_comments a LEFT
JOIN ep_pollution_comments_picture b ON a.comments_id = b.comments_id group by a.comments_id,a.pollution_id,a.comments_chile,a.comments_info, a.create_time,a.user_id;