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toStartOfHour

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

Syntax​

toStartOfHour(expr)

Arguments​

ArgumentsDescription
exprdatetime

Return Type​

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

Examples​

SELECT toStartOfHour(now());
+----------------------+
| toStartOfHour(now()) |
+----------------------+
| 2022-03-29 06:00:00  |
+----------------------+

SELECT toStartOfHour(toDateTime(1630812366));
+---------------------------------------+
| toStartOfHour(toDateTime(1630812366)) |
+---------------------------------------+
| 2021-09-05 03:00:00                   |
+---------------------------------------+