DATETIME MONTH_FLOOR(DATETIME datetime) DATETIME MONTH_FLOOR(DATETIME datetime, DATETIME origin) DATETIME MONTH_FLOOR(DATETIME datetime, INT period) DATETIME MONTH_FLOOR(DATETIME datetime, INT period, DATETIME origin)
Convert the date to the nearest rounding down time of the specified time interval period.
mysql> select month_floor("2023-07-13 22:28:18", 5);
+--------------------------------------------------------------+
| month_floor(cast('2023-07-13 22:28:18' as DATETIMEV2(0)), 5) |
+--------------------------------------------------------------+
| 2023-05-01 00:00:00 |
+--------------------------------------------------------------+
1 row in set (0.12 sec)
MONTH_FLOOR, MONTH, FLOOR
See also date_floor