SECOND() returns the seconds portion of a specified DateTime as a number.
Use SECOND() to isolate the seconds portion of a DateTime.
SECOND(D)
SECOND() returns a numeric value denoting the seconds portion of a DateTime.
If the DateTime is purely a date, then SECOND() returns a zero value.
Using a 24-hour clock and a time of 11:12:32 p.m.:
SECOND(‘23:12:32‘) = 32