What is the difference Using & and && in the macro variables
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when concatinating two macro variable
%let a=sai;
%let b=kumar;
%let &a &b;it resolves as sai kumar
if u want to remove the space b/t then use
%let &&a&b; it resolves as saikumar
when you use %let &a&b;resolves as &akumar
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