How to merge multiple csv files into single dataset using SAS

Question

I have ~2300 CSV files and colunm 1 variable name is different for each CSV file. I want to merge all files by panelistID (colunm 2) and run frequencies on column 1 to get f

Answer 1

Simply use a wildcard on the infile statement to read in all the files, and the filename= option to store the current file in a temporary variable _f, storing it into f.

Then manipulate f and var accordingly.

data big ;
  length _f f $256. ;
  infile "*.csv" truncover filename=_f dlm=',' ;
  f = _f ;
  input var
        panellistID
        ;
run ;