Thanks drl for throwing the lights on the subject , but as far as SCO-UNIX,
UNIX-VER5 are concerned I have experimented and found that if the length
is not equal of the field on which you wanted to join , it fails , same on
RedHat-9 too. Correct me if I am wrong , b'Coz on many occassion I have
seen if the file say if you want to join on strings and the same is not
sorted on -d order or digit not sorted on -n order and the likewise it gave me NIL output. But would like to have your suggestion too . Alwasy ready
to LEARN new things. Thanx in advance to discuss on the subject.