Hello list!

I have a little problem with drives table

Here is the select statement
    
    select drive_name from drives where last_update between
current_timestamp-140 days+3 hours and current_timestamp-140 days+5
hours

It returns exactly the weird entries

DRIVE_NAME
------------------
�4▒(�....1
�4▒(�0...10
�4▒(�....2
�4▒(�
�4▒(�
�4▒(�
�4▒(�
�4▒(�
�4▒(�
�4▒(�

bla, bla

the same for the library_name

How can I del those entries with del drive ???????


Thanks.