topic Global symbol table and llocal symbol table in SAS Programming

Global symbol table and llocal symbol table

UPEN — Mon, 14 Nov 2016 22:16:25 GMT

%let Mv=shoes;
%macro PRODUCT(Mv=bicycles);
%let Mv=clothes;
%mend;
%PRODUCT(Mv=tents)
%put Mv is &Mv;

Why is the value o MV is shoes?? Please explain

Reeza — Mon, 14 Nov 2016 22:30:46 GMT

Because you have both global and local variables.

Since the macro is finished when you request a PUT it uses the global version - which is the first assignment.

Ksharp — Tue, 15 Nov 2016 02:34:25 GMT

Yeah. The local symbol table would be destroied after running the macro.

So you only get the global symbol value.