Macro `now` for timestamp

This macro is a shorter way to write the syntax for resolving the current date and time as a macro expression. It returns the current formatted timestamp. The 'fmt' parameter allows specifying the date/time format to use (default: datetime21.2).

Data Analysis

Type : CREATION_INTERNE

The macro generates the current timestamp using SAS's `datetime()` function, without relying on external data or SASHELP datasets.

1 Code Block

MACRO now

Explanation :
This block defines the `now` macro. It uses `%sysfunc` to call the SAS `datetime()` function which returns the current date and time, then formats it according to the `fmt` parameter. The default format is `datetime21.2`.

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1	%macro now(fmt=datetime21.2);
2	%sysfunc(datetime(),&fmt)
3	%mend now;
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