Aismann
Will you pls make clear what you want in output file ?? see for successful
execution of join commd you require the field should be of same length
and sorted in the same order . i.e. if digit -> sort -n and if alfabet
then -> sort -d . so the both the file will be sorted on the same order
and for faster (a bit ) execution keep the field as 1st and use
join -1 1 -2 1 -t( the delimiter if you have used any ) -o 1.1 1.2 1.3 file1
file 2 > output file . And your job is done.

Enjoy.