Skip to main content

toHour

Converts a date with time to a UInt8 number containing the number of the hour in 24-hour time (0-23). This function assumes that if clocks are moved ahead, it is by one hour and occurs at 2 a.m., and if clocks are moved back, it is by one hour and occurs at 3 a.m. (which is not always true – even in Moscow the clocks were twice changed at a different time).

Syntax​

toHour(expr)

Arguments​

ArgumentsDescription
exprdatetime

Return Type​

UInt8 datatype.

Examples​

mysql> select toHour(now());
+---------------+
| toHour(now()) |
+---------------+
|             6 |
+---------------+

mysql> select toHour(toDateTime(1630812366));
+--------------------------------+
| toHour(toDateTime(1630812366)) |
+--------------------------------+
|                              3 |
+--------------------------------+