SELECT d.id, d.user_name, d.sex, d.phone, d.sign_date, d.user_id, d.park_id, d.act_id, d.VERSION, d.delete_flag, d.create_by, d.create_time, d.update_by, d.update_time, d.tenant_id, a.name, a.id AS aId FROM ics_activity_detail AS d LEFT JOIN ics_activity AS a ON a.id = d.act_id