---
title: "HOUR - OceanBase 数据库 V4.2.1 | OceanBase 文档中心"
description: "HOUR 声明 HOUR(time) 说明 返回时间类型 time 的小时部分的数值。 示例 obclient> SELECT HOUR('10:05:03'); +------------------+ | HOUR('10:05:03') | +------------------+ | 10 | +------…"
---
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文档反馈![](https://mdn.alipayobjects.com/huamei_22khvb/afts/img/A*P8CuR4UJ_FkAAAAAAAAAAAAADiGDAQ/original) OceanBase 数据库分布式版 - V 4.2.1 LTS

# HOUR

更新时间：2026-07-15 20:56:55

[编辑](https://github.com/oceanbase/oceanbase-doc/edit/V4.2.1/zh-CN/700.reference/500.sql-reference/100.sql-syntax/200.common-tenant-of-mysql-mode/400.functions-of-mysql-mode/200.single-row-functions-of-mysql-mode/100.date-and-time-functions-of-mysql-mode/2000.hour-of-mysql-mode.md)  

## 声明

```sql
HOUR(time)

```

## 说明

返回时间类型 `time` 的小时部分的数值。

## 示例

```sql
obclient> SELECT HOUR('10:05:03');
+------------------+
| HOUR('10:05:03') |
+------------------+
|               10 |
+------------------+
1 row in set

obclient> SELECT HOUR('272:59:59');
+-------------------+
| HOUR('272:59:59') |
+-------------------+
|               272 |
+-------------------+
1 row in set

```

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