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toStartOfDay

Rounds down a date with time to the start of the day.

Syntax​

toStartOfDay(expr)

Arguments​

ArgumentsDescription
exprdatetime

Return Type​

Datetime object, returns date in “YYYY-MM-DD hh:mm:ss” format.

Examples​

mysql> select toStartOfDay(now());
+---------------------+
| toStartOfDay(now()) |
+---------------------+
| 2022-03-29 00:00:00 |
+---------------------+

mysql> select toStartOfDay(toDateTime(1630812366));
+--------------------------------------+
| toStartOfDay(toDateTime(1630812366)) |
+--------------------------------------+
| 2021-09-05 00:00:00                  |
+--------------------------------------+