func NewColumnIteratorWithTimestampFormat(format Format, reader io.Reader, timestampFormat string) *Iterator {
	return NewIterator(reader, ColumnUnmarshallerWithTimestamp(format, timestampFormat))
}
func NewColumnIteratorWithTimestampFormat(format Format, reader io.Reader, timestampFormat string) *Iterator {
	return NewIterator(reader, ColumnUnmarshallerWithTimestamp(format, timestampFormat))
}
func NewColumnIteratorWithTimestampFormat ( format Format , reader io . Reader , timestampFormat string ) * Iterator { return NewIterator ( reader , ColumnUnmarshallerWithTimestamp ( format , timestampFormat ) ) }
// NewColumnIteratorWithTimestampFormat creates a new iterator for column data with timestamp.
NewColumnIteratorWithTimestampFormat creates a new iterator for column data with timestamp .