text: SELECT *
  FROM platzi.alumnos
  FETCH FIRST 5 ROWS ONLY;
  
  SELECT *
  FROM platzi.alumnos
  LIMIT 5;
  
  SELECT *
  FROM(
  	SELECT ROW_NUMBER() OVER() AS row_id, *
      FROM platzi.alumnos
  ) AS alumnos_with_row_num
  WHERE row_id < 6;