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

Arguments	Description
<expr>	datetime

Return Type

UInt8 datatype.

Examples

SELECT toHour(now());
+---------------+
| toHour(now()) |
+---------------+
|             6 |
+---------------+

SELECT toHour(to_datetime(1630812366));
+--------------------------------+
| toHour(to_datetime(1630812366)) |
+--------------------------------+
|                              3 |
+--------------------------------+