id, projId, typeId, materialValue, created, updated select a.id, a.proj_id as projId, a.type_id as typeId, a.material_value as materialValue, a.show_index as showIndex, a.created, a.updated, b.name as materialName from com_project_conclusion_material a left join system_parameter b on a.type_id = b.id where a.proj_id = #{projId}