11/3/2023 0 Comments Sas macro![]() The SAS Macros allow us to reuse code in various locations without having to repeat it all the time. Codeīecome a Better Data Professional With Simplilearn The %end statement marks the end of the DO loop, whereas the %mend statement marks the end of the macro. ![]() The macro named test in the example below accepts user input and uses it to perform the DO loop. This macro definition includes a %DO %WHILE loop that finishes with a percent END statement, as required. When the variable val’s value reaches 10, the macro quits otherwise, it continues. When this macro is run, it causes the currently running macro to terminate normally if a specified condition is found to be true. The variable today's value is recorded to the program log in the example below. The SAS log is updated by this macro statement, which writes macro variables or text information. ![]() Now, let us look at some of the examples in depth. Recording the runtime value of a variable in the program log.Terminating a program when a condition is satisfied.The SAS programming language comes with a number of MACRO statements. Where make = "&make_" and type = "&type_" The software below displays a set of SAT variables under the show_result macro, which is invoked by other SAS expressions. %MacroName (Value1, Value2,….Valuen) Example In the below syntax, we declare the local variables. The statement begins with a %MACRO and concludes with a %MEND. What Are SAS Macro Programs?Ī macro is a collection of SAS statements that are referred to by a name and can be used in any application that uses that name. Let us now learn about Macro Programs in SAS. We use the SASHELP library's CARS data set, which is an in-built SAS data set. The title will display the current time without any values being coded. Consider the following scenario: every time a millisecond passes by, the SAS report is generated, and the system time is printed in the title. The SAS variable SYSTIME, which indicates the system time, is illustrated here. Global SAS Macro Variables are system-defined and do not have a specified syntax. The system time is an example of a global SAS Macro Variable. They are system-assigned variables that are accessed by numerous programs in general. Where make = &make_name and type = &type_name īecause they can be accessible by any SAS program in the SAS environment, these variables are referred to as global macro variables. This variable reference can be many times in any SAS statement in the case of bring programs. The program below gathers all of the observations for the brand 'Audi' and the category 'Sports.' If we want a different make result, we must modify the variable make name value without changing anything else in the program. The SAS statements utilize the variables by appending the ‘&’ character to the start of the variable name. Any valid SAS variable can be used as the Macro variable name. In this, the Value field can include any numeric, text, or date value that the program requires. These are usually used to provide alternative variables in the same SAS statements so that they can process diverse data set observations. SAS applications can access these variables if they are defined as a part of the program. So, let us look at the types of macro variables with examples. They can have a Local or Global focus.īefore getting into the implementation through examples, we must understand the different types of macro variables. These are declared at the beginning of a SAS program and then referenced later in the code. The SAS variables store a value in a SAS program that can be utilized over and over again. Let us now explore the variables within the SAS Macro. In the same way that macro variables can be initialized for blocks of code that will be reused several times, macros can be declared for blocks of code that will be reused multiple times. It also aids in the creation of dynamic variables that can take on changing values in the code depending on how the code is run. ![]() SAS includes Macros, a unique programming feature that helps us to avoid writing repetitive code and reuse it when necessary.
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