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或者second

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;
+------+-------+------+------+--------+--------+
| year | month | day  | hour | minute | second |
+------+-------+------+------+--------+--------+
| 2022 |     9 |   22 |   17 |      1 |     30 |
+------+-------+------+------+--------+--------+

keywords

extract