You already know that you can use
a FILENAME statement to associate a fileref with a single raw data
file. You can also use a FILENAME statement to concatenate raw data
files by assigning a single fileref to the raw data files that you
want to combine.
General form, FILENAME
FILENAME fileref ('external-file1' 'external-file2'
Here is an explanation of the syntax:
is any SAS name that
is eight characters or fewer.
is the physical name
of an external file. The physical name is the name that is recognized
by the operating environment.
All of the file specifications
must be enclosed in one set of parentheses.
When the fileref ...