Macros allow you to make more dynamic, complex, and generalizable sas programs. Writing cleaner and more powerful sas code using macros myweb. These are the variables which hold a value to be used again and again by a sas program. The % macro statement includes a name and the macro is called using the macro s name preceded by a %. Macro programming is generally considered an advanced topic. Sas macros play key role in the real time sas progr.
To illustrate how macro functions can be used, a few examples are shown below. Programming language for string manipulation strings are characters usually sas statements or pieces of sas statements normally considered advanced, but. Sas macro programming made easy, third edition author. Because you are writing a program that writes a program, this is sometimes called metaprogramming. The use of macro variables and macro code is difficult to learn without some training. Lets discuss some examples of sas macro variable and sas macros, when you want to use a particular value multiple times in a program and. This workshop will introduce the user to a few of the. Sas programming facilities and works with existing. Before sas can compile and execute your program, sas must pass your macro statements to the macro processor which then resolves your macros generating. Sas macro programming tips and techniques south central sas.
Sas macros with examples sas macros advanced sas macro loop sas macro. But, while macros certainly can be challenging, it is also true that the basic concepts are not difficult to learn. We explain how the macro processor works, and how to. The sas macro language is a very versatile and useful tool. Sas has a powerful programming feature called macros which allows us to avoid repetitive sections of code and to use them again and again when needed.
An introduction to sas macros steven first, systems seminar consultants, madison, wi abstract the sas programming language has a rich toolbox of features that can offer a lot of power to the user. Before sas can compile and execute your program, sas must pass your macro statements to the macro processor which then resolves your macros generating standard sas code. Furthermore, we can use it to write sas programs that are dynamic and flexible. Macros can greatly reduce the effort required to read and write sas. Carpenters complete guide to the sas macro language. Advanced sas programming video by provides sas training with macros. It also helps create dynamic variables within the code that can take different values for different run instances of the same code. How a macro program is compiled 114 how a macro program executes 120. Sas macro programming for beginners semantic scholar. To help you learn how to define your own macros, this section presents a few examples you can model your own macros. Delwiche, delwiche consulting, winters, ca abstract macro programming is generally considered an advanced topic. Advanced sas programming sas macros programming tutorial.
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