SAS: concatenate different datasets while keeping the individual data table names

Question

I\'m trying to concatenate multiple datasets in SAS, and I\'m looking for a way to store information about individual dataset names in the final stacked dataset.

For

Answer 1

If you have SAS 9.2 or newer you have the INDSNAME option http://support.sas.com/kb/34/513.html

So:

data final;
format dsname datasetname $20.; *something equal to or longer than the longest dataset name including the library and dot;
set my_data_1 abc xyc indsname=dsname;
datasetname=dsname;
run;

Answer 2

Use the in statement when you set each data set:

data final;
 set my_data_1(in=a) abc(in=b) xyc(in=c);
 if a then var_3='my_data_1';
 if b then var_3='abc';
 if c then var_3='xyz';
run;