EXTRACT(type FROM date)

Posted 2020-09-19

 

EXTRACT(type FROM date) 用于获取指定的日期值

mysql> SELECT EXTRACT(YEAR FROM ‘2016-07-02‘) AS col1,           # 当type为YEAR时，只返回年值
    -> EXTRACT(YEAR_MONTH FROM ‘2016-07-02 01:02:03‘) AS col2,   # 当type为YEAR_MONTH时，返回年与月
    -> EXTRACT(DAY_MINUTE FROM ‘2016-07-02 01:02:03‘) AS col3;   # 当type为DAY_MINUTE时，返回日、小时、分钟
+------+--------+-------+
| col1 | col2   | col3  |
+------+--------+-------+
| 2016 | 201607 | 20102 |
+------+--------+-------+