n is an integer in the range 0—9. The default value is 0.
TimePrecision defines the default number of decimal places in the value returned by the SQL scalar functions GETDATE(), CURRENT_TIME, CURRENT_TIMESTAMP, GETUTCDATE, and UNIX_TIMESTAMP. A value returned by these function has n decimal places for fractional seconds. The actual precision possible is platform dependant; precision digits in excess of the precision available on your system are returned as zeros.
Changing This Parameter
On the SQL page of the Management Portal (System Administration > Configuration > SQL and Object Settings > SQL), for the Default time precision for GETDATE(), CURRENT_TIME, and CURRENT_TIMESTAMP setting, select a number of decimal places.
You can also change TimePrecision with the Config.SQL class (as described in the class reference), by editing the CPF in a text editor (as described in the Editing the Active CPF section of the “Introduction to the Configuration Parameter File” chapter in this book), or by using the SET OPTION command.