---
title: "TO_DAYS - OceanBase 数据库 V4.2.1 | OceanBase 文档中心"
description: "TO_DAYS 声明 TO_DAYS(date) 说明 返回指定 date 值对应的天数。天数指距离 0000-01-01 的天数。 示例 obclient> SELECT TO_DAYS('2015-11-04'), TO_DAYS('20151104'); +-----------------------+---…"
---
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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

# TO_DAYS

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/4800.to-days-of-mysql-mode.md)  

## 声明

```javascript
TO_DAYS(date)

```

## 说明

返回指定 `date` 值对应的天数。天数指距离 `0000-01-01` 的天数。

## 示例

```javascript
obclient> SELECT TO_DAYS('2015-11-04'), TO_DAYS('20151104');
+-----------------------+---------------------+
| TO_DAYS('2015-11-04') | TO_DAYS('20151104') |
+-----------------------+---------------------+
|                736271 |              736271 |
+-----------------------+---------------------+
1 row in set

```

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