You want total rupees at age 55, starting with AMOUNT at age AGE.   What's wrong with the chatgpt code?   Edit: and what do you mean by finding the solution "dynamically"?  I see nothing static about the chatgpt solution.  (Perhaps you mean that the age limit 55 is to be made into a paramenter). ... View more

Why use SQL? proc sort data=demo out=want nodupkey; by pid; run; proc print data=want; run; ... View more