Hi,

If you can fiddle with a database, this is very easy to solve with SQL; in Postgres, probably others, you can write :

update tbldata set name = t1.name from tbldata t1 where tbldata.name i
+s null and tbldata.id = t1.id;
[download]

(assuming your data resides in tbldata with fields id, name, number, code)