PROC SQL supports the remerging of summary function results into the table's original data. For example, computing the percentage of total is achieved with 100* x /SUM( x ) in PROC SQL. See ...

/*I do not like PROC SQL. I don’t like the fact that it is neither pure SQL nor is it SAS, and that SAS programmers */ /*need to jump between SAS datasteps and PROC SQL, depending on which will ...