Answer Posted / p.rakesh kumar reddy

-An interpreter translates some form of source code into a
target representation that it can immediately execute and
evaluate. The structure of the interpreter is similar to
that of a compiler, but the amount of time it takes to
produce the executable representation will vary as will the
amount of optimization.

-Interpreter excuts bytecode line by line, and it converts
byte code into Machine code.


-compiler takes whole program at a time and executes it.....


-where as interpreter executes the program line by line.....

How to import multiple xls files into sas. Out of those files, how to get different values from a single variable and how to find number of rows per value type? We can do this using group by for one xls file with proc sql. Was wondering how I can achieve this for multiple files at the same time. Any ideas?

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