MySQL 为日期添加天数
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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