h.id, h.create_by, h.create_date, h.update_by, h.update_date, h.del_flag, h.remarks, h.number, h.tree_id, h.features, h.description, h.use_flag
select , ht.name as tree_name from help h left join help_tree ht on ht.id = h.tree_id and ht.del_flag = '0' ${ew.customSqlSegment}
select , ht.name as tree_name from help h left join help_tree ht on ht.id = h.tree_id and ht.del_flag = '0' where h.del_flag = '0' and h.id = #{id}