在SQL中，datetime類型數據的排序可以通過以下幾種技巧實現：
SELECT * FROM table_name ORDER BY datetime_column ASC; -- 按照datetime字段升序排序
SELECT * FROM table_name ORDER BY datetime_column DESC; -- 按照datetime字段降序排序
SELECT * FROM table_name ORDER BY DATE_FORMAT(datetime_column, '%Y-%m-%d') ASC; -- 按照日期升序排序
SELECT * FROM table_name ORDER BY DATE_FORMAT(datetime_column, '%Y-%m-%d') DESC; -- 按照日期降序排序
SELECT * FROM table_name ORDER BY DATE(datetime_column) ASC; -- 按照日期部分升序排序
SELECT * FROM table_name ORDER BY DATE(datetime_column) DESC; -- 按照日期部分降序排序
