Sort the data according to the translation table UPPER and print the new data set. The SORTSEQ= option specifies that PROC SORT sort the data according to the customized translation table UPPER, which treats lowercase and uppercase letters alike. This method is useful for sorting without regard for case. PROC PRINT prints the sorted data set.

proc sort sortseq=upper;
   by values;
run;
proc print noobs;
   title 'Customized Sort Sequence';
run;