SELECT
  t.descr,
  MIN(NULLIF(LOCATE(d.d, t.descr), 0)) AS pos
FROM (SELECT 'Nokia 2310' AS descr UNION ALL
      SELECT 'iphone 4s' UNION ALL
      SELECT 'siemens c35') AS t,
(SELECT 0 AS d UNION ALL SELECT 1 UNION ALL
 SELECT 2 UNION ALL SELECT 3 UNION ALL
 SELECT 4 UNION ALL SELECT 5 UNION ALL
 SELECT 6 UNION ALL SELECT 7 UNION ALL
 SELECT 8 UNION ALL SELECT 9) AS d
GROUP BY t.descr;