如何在mysql中将字符串转换为日期？ [英] how to convert a string to date in mysql?

问题描述

我有一个字符串列作为日期，我想选择它作为 date 。

I have a string column which acts as a date and I want to select it as a date.

可以吗？

我的样本数据格式为月/日/年 - > 12/31/2011

My sample data format would be; month/day/year -> 12/31/2011

推荐答案

正如这里所说 MySQL使用带有日期文本的字符串列作为日期字段，您可以执行

As was told here MySQL Using a string column with date text as a date field , you can do

SELECT  STR_TO_DATE(yourdatefield, '%m/%d/%Y')
FROM    yourtable

您还可以在WHERE子句中处理这些日期字符串。例如

You can also handle these date strings in WHERE clauses. For example

SELECT whatever
  FROM yourtable
 WHERE STR_TO_DATE(yourdatefield, '%m/%d/%Y') > CURDATE() - INTERVAL 7 DAYS

这样可以处理各种日期/时间布局。请参阅 DATE_FORMAT（）函数的格式说明符，以查看可以将第二个参数放入 STR_TO_DATE（）

You can handle all kinds of date / time layouts this way. Please refer to the format specifiers for the DATE_FORMAT() function to see what you can put into the second parameter to STR_TO_DATE()

http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date-format

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