mysql> select * from table1 where minute(order_date)=46;+----------+------------+-----+---------------------+| name_new | transactor | pid | order_date          |+----------+------------+-----+---------------------+| 3hahha   | 3xiaohong  |   3 | 2019-08-04 20:46:02 || 4hahha   | 4xiaohong  |   4 | 2019-08-04 20:46:05 || 3hahha   | bob        |   5 | 2019-08-04 20:46:08 || 3hahha   | lee        |   6 | 2019-08-04 20:46:12 |+----------+------------+-----+---------------------+4 rows in set (0.00 sec)mysql> select count(*) as num from table1 where minute(order_date)=46;+-----+| num |+-----+|   4 |+-----+1 row in set (0.00 sec)