今天写了一个一对多的查询用到了collection,首先是这样的 这样的 select u.id as u_id, u.company_id as companyId, u.name,u.sex, u.mobile, u.email, u.id_card as id_card, u.work_code as work_code, u.position, u.if_delete as if_delete, u.update_time as update_time, ur.supplier_user_id as supplier_user_id,ur.su