second_floor
second_floor
description
Syntax
DATETIME SECOND_FLOOR(DATETIME datetime)
DATETIME SECOND_FLOOR(DATETIME datetime, DATETIME origin)
DATETIME SECOND_FLOOR(DATETIME datetime, INT period)
DATETIME SECOND_FLOOR(DATETIME datetime, INT period, DATETIME origin)
将日期转化为指定的时间间隔周期的最近下取整时刻。
- datetime:参数是合法的日期表达式。
- period:参数是指定每个周期有多少天组成。
- origin:开始的时间起点,如果不填,默认是 0001-01-01T00:00:00。
example
mysql> select second_floor("2023-07-13 22:28:18", 5);
+---------------------------------------------------------------+
| second_floor(cast('2023-07-13 22:28:18' as DATETIMEV2(0)), 5) |
+---------------------------------------------------------------+
| 2023-07-13 22:28:15 |
+---------------------------------------------------------------+
1 row in set (0.10 sec)
keywords
SECOND_FLOOR, SECOND, FLOOR
Best Practice
还可参阅 date_floor