Full ebook carpenter s complete guide to the sas macro. The sas macro language is a powerful tool for extending the capabilities of the sas system. The first two chapters of this book illustrate these preparatory steps. This paper shows you how to write macros for a production environment and includes some advanced tips and. A macro language statement instructs the macro processor to perform an operation. Changes and enhancements introduction sas programs and macro processing macro variables macro processing. This course focuses on the components of the sas macro facility.
He provides training and instruction on the sas macro language and other sas topics to sas users nationwide. Macro functions include character functions, evaluation functions, and quoting functions. This section describes the features of the sas macro facility that are new or enhanced since sas 8. Watts 2003a has an example of the proc sql step that prepares a list of global macro variables for deletion. Carpenters complete guide to the sas macro language, third. Carpenters complete guide to the sas macro language, 2nd edition. Macros consist of collections of regular sas program statements, macro variables, macro language statements, and macro functions contained within a %macro. Notes and labs from sas macro language 1 essentials. Can deal with very large datasets io all datasets in wrds are in sas many features built in. Standard query language proc sql matrix language proc iml non linear programming proc nlp syntax rules all commands end in a semicolon sas statements are not case sensitive.
It consists of a string of keywords, sas names, and special characters and operators, and it ends in a semicolon. However, not every program is improved by using macros. Introduction to sas macro language 3 what is the sas macro facility. Serves as the text for the sas macro language 1 essentials course. The sas macro language is a very versatile and useful tool. Sas programming basics of sas programming language. Store your macro source code in the same directory as your macro catalog. The rest of sas receives those statements and uses them in the same way it uses the ones you enter in the standard manner. Introduction to sas macro language 23 good ideas about stored macros. The correct bibliographic citation for this manual is as follows. Download carpenters complete guide to the sas macro. Abstract the macro facility is an important feature of the sas language.
Macro variables macro variables hold the value of text strings the easiest way to assign a value to a macro variable is using %let. In general, a macro language function processes one or more arguments and produces a result. The varnum function is the opposite as it provides the position number given the variable name. There are several enhancements to the macro language facility including a new automatic macro variable, new comparison operators, new sas system. The macro language functions are listed in macro functions.
Common examples are terminating a program when some condition is met or capturing the runtime value of a variable in the program log. Provides complete information about macro language elements, interfaces between the sas macro facility and other parts of sas software, and macro processing in general. You can use all macro functions in both macro definitions and open code. Sas macro language question sas support communities. It is often used to reduce the amount of regular sas code and it facilitates passing information from one procedure to another procedure. The macro facility enables you to assign a name to character strings or groups of sas programming statements. An introduction to sas macros 10 the sas macro language a second sas programming language for string manipulation. Select a simpler, more appropriate sas tool to accomplish a programming task. Book code e1501, course code lwmac1mac1, prepared date 15jun2009title page verso. This handson workshop teaches essential macro coding. We demonstrated this approach in the following three steps.
It is often used to reduce the amount of regular sas code and it facilitates passing information from. This training will help you understand sas in depth and help you master various concepts of sas programming language. This course focuses on the components of the sas macro facility and how to design, write, and debug macro systems. Furthermore, we can use it to write sas programs that are dynamic and flexible. Emphasis is placed on understanding how programs with macro code are. I want to create a pdf output and for each of the above frequency tables and store it either in a single pdf or in a multiple pdfsnot too particular on that. Using sas language functions in the data step and macro facility. Best practices and advanced tips and techniques for sas macro programming gerry bonin, we energies, milwaukee, wi abstract sas macros offer a powerful way to extend the sas language and create reusable sas code that is a custom fit for you. The sas macro language does not support using hexadecimal values to specify nonprintable characters. Macro variables sas macro variables are the basic units that are used by macro facility interfaces and macro programs. They are used by other sas programs without explicitly declaring them. The sas software macro language is a simple yet powerful programming language. Explains how to increase the modularity, flexibility, and maintainability of your sas code using the sas macro facility. Writing cleaner and more powerful sas code using macros.
There are several enhancements to the macro language facility including a new automatic macro variable, new comparison operators, new sas system options, new macro statements, new functions, and a new option for the %macro statement. Sas has many macro statements which are inbuilt in the sas programming language. The process starts with using macro language that allows for repetitive programming code to be written with minimal effort. A macro language function processes one or more arguments and produces a result. Writing cleaner and more powerful sas code using macros myweb. Reference pdf files click the title to view the chapter or appendix using the adober acrobatr reader. The pdf function is one of several builtin functions for working with probability distributions, so you can just call the pdf function directly. The sas macro language is an extremely flexible tool which facilitates sas programmers. A handbook of tools and techniques sas macro programming made easy base sas procedures guide sas language reference. Macro programming is generally considered an advanced topic. Carpenters complete guide to the sas macro language 2nd. Building reusable and highly effective tools with the sas macro. This macro executes a userde ned r code in batch mode by calling the unnamed pipe method within base sas.
In this course, you will learn how to design, write, and debug macro systems. Mb i think that carpenters complete guide to the sas macro language. If used properly, it can make programming easier and more fun. When you use a macro facility name in a sas program or from a command prompt. Mastering this facility will enable the novice user to become an accomplished programmer. Art carpenter art carpenter, an independent consultant and statistician, has been a sas software user since the mid 70s.
This article examines the sas software array and associated do loop statements with the idea of translating those concepts into sas software macro language usage. The sas macro language consists of macro variables, macro facility interfaces, macro programs, and macro storage techniques. Advanced sas programming sas macros programming tutorial. Microsoft visual basic language vb, dde and base sas are used together to reduce the rtf file to pdf file conversion time. The macro language is an extension to the sas system which provides the capability to develop sas statement text.
Some macro language statements are allowed only in macro definitions, but you can use others anywhere in a sas session or job, either inside or. Calls to implied macros do not use the percent % sign and consequently can be easily confused with base language statements. The simplest, but very useful, form of the macro language is the assignment statement. You can call it from the data step or from proc iml. Emphasis is placed on understanding how programs with macro code are processed. Best practices and advanced tips and techniques for sas. Carpenters complete guide to the sas macro language. Recommended reading carpenters complete guide to the sas macro language debugging sas programs. Generally, we can consider macro language to be composed of. You cannot reconstruct source code from compiled code define any macro variables used in your. Resolving macro variables in quotes within proc sql passthroughs. Furthermore, it is another language syntax to learn, and can create problems in debugging programs that are even more entertaining than. Implementing proc lua code in the sas macro language. For sas programmers or analysts who need to generalize their programs or improve programming efficiency, art carpenter thoroughly updates his highly successful second edition of carpenters complete guide to the sas macro language with an extensive collection of new macro language techniques and examples addressing the composition and operation of the sas macro facility and the sas macro.
Using the sas macro language to full advantage california. Please mention it in the comments section and we will get back to you. Macros consist of collections of regular sas program statements, macro variables, macro language statements, and macro functions contained within a % macro. The sas macro language is another language that rests on top of regular sas code.
Many sas data step functions like put have macro analogs. You can work with the names you created rather than with the text itself. It does not support the use of hexadecimal character constants. You are attempting to mix sas macro language elements with data step elements.
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