MySQL在日期中添加天数 [英] MySQL add days to a date

问题描述

我在MySQL中有一张表.将表中的当前日期值添加为2天的sql语句应该是什么?

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

这会增加一秒钟的值，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

假定您的字段是date类型(或类似类型):

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

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

在您提供的示例中，它看起来可能像这样:

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

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

这种方法也可以与datetime一起使用.

This approach works with datetime , too.

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