MySQL DATETIME-仅更改日期 [英] MySQL DATETIME - Change only the date

问题描述

从开始:2011-01-17 09:30:00

Starting with : 2011-01-17 09:30:00

假设我只想编辑2011-01-28的日期

Let's say I want to edit just the date with 2011-01-28

最有效的结局是:2011-01-28 09:30:00

What is the most efficient way to end up with: 2011-01-28 09:30:00

谢谢！

对于每个说Date_Add ...的人，这都需要我减去日期，然后加上日期.那是有可能的……但它正打算删除该第一步，而只是替换"日期

For everyone saying Date_Add... that would require me to subtract the dates, then add the days. Thats a possibility... but was looking to remove that first step, and just "replace" the date

推荐答案

如果您真的不想使用date_add函数，则可以考虑使用以下结构:

If you really don't want to use date_add function, you can consider using this construction:

UPDATE table_name SET field_name = concat('2011-01-12 ', time(field_name)) 

请确保在日期之后添加一个空格('2011-01-12 ◯').

Make sure to add a space after the date ('2011-01-12◯').

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