As featured in: Data Management Solutions Using SAS Hash Table Operations: A Business Intelligence Case Study , and built from this github repository.
Chapter 4 Template Data Step.sas
1 /* "Chapter 4 Template Data Step.sas" from the SAS Press book
2  Data Management Solutions Using SAS Hash Table Operations:
3  A Business Intelligence Case Study
4 */
5 
6 data _null_ ;
7  dcl hash H (multidata:"Y", ordered:"N") ;
8  H.definekey ("K") ;
9  H.definedata ("D") ;
10  H.definedone () ;
11  do K = 1, 2, 2, 3, 3, 3 ;
12  q + 1 ;
13  D = char ("ABCDEF", q) ;
14  H.ADD() ;
15  end ;
16  h.output(dataset: "AsLoaded") ;
17  /*...Insert demo code snippets below this line...*/
18  stop ;
19 run ;