1 | initial version |
Define the macro variable: Use the %let statement to define a macro variable and assign a value to it.
Use macro conditionals: Use the %if-%then-%else statement to check the value of the macro variable. If the condition is true, execute the code in the %then block, otherwise execute the code in the %else block.
Use macro loops: Use the %do-%end statement to create a loop that repeats a block of code based on the value of the macro variable.
Use macro functions: Use macro functions such as %sysfunc, %index, %length, %substr, etc. to manipulate the value of the macro variable in order to perform actions based on its current state.
Incorporate macro variables into SAS code: Use the "&" symbol to incorporate macro variables into SAS code. This will enable the SAS program to dynamically adjust to changes in the value of the macro variable.
Debugging: Debugging is an important step in programming. Use SAS logs, output windows, and diagnostic tools to identify and fix errors in the code.
Testing: Testing is essential to make sure the code executes as expected. Test the code using sample data and modify it as necessary to ensure optimal performance.