docs/sql-manual/sql-functions/date-time-functions/hour.md

---
{
    "title": "HOUR",
    "language": "en"
}
---

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## Description

Retrieves the hour information from a date.

The parameter can be of type Date, DateTime, or Time.

When the parameter is of type Date or DateTime, the return value ranges from 0 to 23. When the parameter is of type Time, the return value can exceed 24.

## Syntax
`INT HOUR(DATETIME date)`

## Example

```sql
mysql> select hour('2018-12-31 23:59:59');
+-----------------------------+
| hour('2018-12-31 23:59:59') |
+-----------------------------+
|                          23 |
+-----------------------------+
mysql> 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 |
+-----------------------+-----------------------------+-------------------------------+-------------------------------+
```
## Keywords
    HOUR