Select des_cur as SECCION, id_alu as CODIGO, ape_per as APELLIDO, nom_per as NOMBRE, sisben as SISBEN from alumno inner join alumcurso using (id_alu) inner join curso using (cod_cur) inner join grado using (cod_gra) left join info_adi_alu using (id_alu) order by ord_gra, des_cur, ape_per, nom_per