extract
description
Syntax
INT extract(unit FROM DATETIME)
提取DATETIME某个指定单位的值。单位可以为year, month, day, hour, minute, second 或者 microsecond
Example
mysql> select extract(year from '2022-09-22 17:01:30') as year,
-> extract(month from '2022-09-22 17:01:30') as month,
-> extract(day from '2022-09-22 17:01:30') as day,
-> extract(hour from '2022-09-22 17:01:30') as hour,
-> extract(minute from '2022-09-22 17:01:30') as minute,
-> extract(second from '2022-09-22 17:01:30') as second,
-> extract(microsecond from cast('2022-09-22 17:01:30.000123' as datetimev2(6))) as microsecond;
+------+-------+------+------+--------+--------+-------------+
| year | month | day | hour | minute | second | microsecond |
+------+-------+------+------+--------+--------+-------------+
| 2022 | 9 | 22 | 17 | 1 | 30 | 123 |
+------+-------+------+------+--------+--------+-------------+keywords
extract