SELECT CURRENT_TIMESTAMP - INTERVAL 2 YEARS + INTERVAL 1 MONTH - INTERVAL 3 DAYS + INTERVAL 10 HOURS + interval 30 MINUTES - INTERVAL 20 SECOND AS past_timestamp FROM VALUES ("dummy");

WITH ts AS ( SELECT CURRENT_TIMESTAMP AS now FROM VALUES ('dummy') ) SELECT now - INTERVAL 1 DAY - INTERVAL 2 HOURS - INTERVAL 3 MINUTES - INTERVAL 4 SECONDS AS LONG_VERSION, now - INTERVAL '1 2:3:4.100' DAY TO SECOND AS SHORT_VERSION FROM ts;