HOUR

Description

Obtains the hour information from the given datetime.

Syntax

HOUR(<dt>)

Parameters

Parameter	Description
<dt>	The date to be calculated.

Return Value

Returns the hour information from the given date. The return value ranges from 0 to 23. When the parameter is of type TIME, the return value can be greater than 24.

Examples

select hour('2018-12-31 23:59:59');

+-----------------------------+
| hour('2018-12-31 23:59:59') |
+-----------------------------+
|                          23 |
+-----------------------------+

select cast(4562632 as time),hour(cast(4562632 as time)), minute(cast(4562632 as time)),second(cast(4562632 as time));

+-----------------------+-----------------------------+-------------------------------+-------------------------------+
| cast(4562632 as TIME) | hour(cast(4562632 as TIME)) | minute(cast(4562632 as TIME)) | second(cast(4562632 as TIME)) |
+-----------------------+-----------------------------+-------------------------------+-------------------------------+
| 456:26:32             |                         456 |                            26 |                            32 |
+-----------------------+-----------------------------+-------------------------------+-------------------------------+