Function roundAndCheck

pkg/sql/sem/tree/datum.go:2890–2900

roundAndCheck rounds the given time to the specified precision and checks if the rounded time is within the supported bounds. Supported bounds: - [MinSupportedTime, MaxSupportedTime] - TimeInfinity - TimeNegativeInfinity

(t time.Time, precision time.Duration)

//   - TimeInfinity
//   - TimeNegativeInfinity
func roundAndCheck(t time.Time, precision time.Duration) (time.Time, error) {
	ret := t.Round(precision)
	if ret.After(MaxSupportedTime) || ret.Before(MinSupportedTime) {
		if t == pgdate.TimeInfinity || t == pgdate.TimeNegativeInfinity {
			return t, nil
		}

		return time.Time{}, NewTimestampExceedsBoundsError(ret)
	}
	return ret, nil
}

// MakeDTimestampTZ creates a DTimestampTZ with specified precision.
func MakeDTimestampTZ(t time.Time, precision time.Duration) (_ *DTimestampTZ, err error) {