HOUR
hour
description
Syntax
INT HOUR(DATETIME date)
Returns hour information in the time type, ranging from 0,23
The parameter is Date or Datetime type
example
mysql> select hour('2018-12-31 23:59:59');
+-----------------------------+
| hour('2018-12-31 23:59:59') |
+-----------------------------+
| 23 |
+-----------------------------+
keywords
HOUR