SAS Macro Compilation and Usage with MCOMPILENOTE

The script begins with a detailed explanation of SAS^© macro compilation, emphasizing that the macro processor checks the syntax of macro statements and stores the compiled definition in a temporary SAS^© catalog (usually `work.sasmacr`). It highlights the importance of the `MCOMPILENOTE=ALL` option for confirming successful compilation and obtaining information about the macro (number of statements, size) in the SAS^© log. The `prtlast` macro is provided as a practical example, using `PROC PRINT` to display the first 10 rows of the last SAS^© table (`&syslast`) in the session.

Data Analysis

Type : INTERNAL

The code uses the automatic macro variable `&syslast` which references the last SAS table created or modified in the current session. The data therefore comes from the SAS session itself, not from an external source or created directly by this script.

1 Code Block

OPTION

Explanation :
This SAS statement activates the `MCOMPILENOTE=ALL` system option. This configures SAS to issue a note in the log each time a macro is compiled, indicating the success of the compilation, the number of statements, and the size of the macro.

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1	options mcompilenote = all;

2 Code Block

MACRO DEFINITION (%prtlast)

Explanation :
This block defines a SAS macro named `prtlast`. When executed, this macro uses `PROC PRINT` to display the first ten observations (`obs=10`) of the last SAS table created or modified in the session (`&syslast`). A dynamic title is also applied to the listing, including the name of the table being processed.

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1	%macro prtlast;
2	PROC PRINT DATA=&syslast (obs=10);
3	title "Listing of &syslast data set";
4	RUN;
5	%mend;

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