現在の日時を取得する
DATETIME関数
sas_datetime = DATETIME();
https://documentation.sas.com/doc/ja/pgmsascdc/v_061/ds2ref/p037ecmn1cv535n1op7wm4qnza7a.htm
sas_datetime = DATETIME();
https://documentation.sas.com/doc/ja/pgmsascdc/v_061/ds2ref/p037ecmn1cv535n1op7wm4qnza7a.htm