@Sarath_A_SAS
You're replying to a very old discussion here....
In this method, you use the $upcase. format to ensure that all character variables in your dataset are stored in uppercase format.
Actually: Using format $upcase. will DISPLAY/PRINT the characters uppercase but it will not change how they are stored. If you want to change how they are stored you need to rewrite the values using code like:
data all_upper;
set sashelp.class;
array cvars {*} _character_;
do _i=1 to dim(cvars);
cvars[_i]=upcase(cvars[_i]);
end;
drop _i;
run;
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