In dbase I could filter a field with this command.
at(substr(sc,1,2),'28,30,40,45,51,66,67')<>0
The fieldor column called "sc" has a value such as 67-251, 40-123,13-144 13-251, 40-117 and many more. I only need to consider the first two characters for my filter, such as 67, 13 or 40
How...