datetime_add_hh
Adds or subtracts the specified number of hours to the timestamp
Examples:
datetime_add_hh(to_floating_timestamp('2020-01-01T11:00:00'), 5)
-- Result: "2020-01-01T16:00:00"
datetime_add_hh(to_floating_timestamp('2020-01-01T16:00:00'), -5)
-- Result: "2020-01-01T11:00:00"
a, n -> a