How to perform 'Fetch All Rows' in SAS.
* Task: Fetch All Rows
* Language: SAS
%macro fetch_all_rows()
* Implementation for Fetch All Rows
%let result = ...; * Initialize variable
* TODO: Implement core logic here
* Step 1: Prepare data
* Step 2: Process Fetch All Rows
%put("Done");
%mend;