record.go
func (r Record) GetInt(column string) (int64, error) {
	v, err := r.getKey(reflect.Float64, column)
	if err != nil {
		return 0, err
	}

	return int64(v.(float64)), nil
}
func (r Record) GetInt(column string) (int64, error) {
	v, err := r.getKey(reflect.Float64, column)
	if err != nil {
		return 0, err
	}

	return int64(v.(float64)), nil
}
// GetInt returns an integer value for a specific column.