MySQL 为日期添加天数

MySQL add days to a date(MySQL 为日期添加天数)

问题描述

我在 MySQL 中有一张表.将 2 天添加到表中的当前日期值的 sql 语句是什么样的?

I have a table in MySQL. What would be the sql statement look like to add say 2 days to the current date value in the table?

UPDATE classes 
SET 
date = date + 1
where id = 161

这给值增加了一秒，我不想更新时间，我想增加两天?

this adds one second to the value, i don't want to update the time, i want to add two days?

推荐答案

假设您的字段是 date 类型(或类似的):

Assuming your field is a date type (or similar):

SELECT DATE_ADD(`your_field_name`, INTERVAL 2 DAY) 
FROM `table_name`;

使用您提供的示例，它可能如下所示:

With the example you've provided it could look like this:

UPDATE classes 
SET `date` = DATE_ADD(`date` , INTERVAL 2 DAY)
WHERE `id` = 161;

这种方法也适用于 datetime .

This approach works with datetime , too.

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