MYSQL - 按从最新到最旧的顺序升序排列时间戳值?

2022-01-13 00:00:00 timestamp mysql sql-order-by

我在尝试按时间戳值对某些结果进行排序时遇到了问题.

I have come across a problem when trying to order certain results by their timestamp value.

我希望根据时间戳值从最新到最旧显示这些结果.

I would like these results displayed from the newest, to the oldest based on the timestamp values.

为了解释这一点，假设有 3 个结果:

So to explain this, imagine that there were 3 results:

2012-07-11 17:34:57
2012-07-11 17:33:28
2012-07-11 17:33:07

这个结果集是我所需要的，但给出了以下查询

This result set would be what I would require, but given the following query

SELECT timestamp
FROM randomTable
ORDER BY timestamp ASC

我明白了:

2012-07-11 17:34:57
2012-07-11 17:33:07
2012-07-11 17:33:28

这是按数值排序的，07在28之前.

This is as it is sorted by numerical value and 07 comes before 28.

如果我按降序排序，我得到

If i sort in descending order I get

2012-07-11 17:33:07
2012-07-11 17:33:28
2012-07-11 17:34:57

这是我要找的……但它是相反的.

Which is what I am looking for... But it is in reverse.

所以我的问题很简单，如何按照我描述的升序对这些值进行排序?

So my question is fairly simple, how could I sort these values in ascending order as I have described?

CREATE TABLE `user_quotations` (
 `id` int(100) NOT NULL AUTO_INCREMENT,
 `quoteNumber` int(100) NOT NULL,
 `lastModified` datetime NOT NULL,
 `userId` int(100) NOT NULL,
 `manufacturer` varchar(250) COLLATE latin1_general_ci NOT NULL,
 `modelNumber` varchar(250) COLLATE latin1_general_ci NOT NULL,
 `productDesc` varchar(1000) COLLATE latin1_general_ci NOT NULL,
 `timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
 PRIMARY KEY (`id`),
 KEY `quoteNumber` (`quoteNumber`,`lastModified`,`userId`,`manufacturer`,`modelNumber`,`timestamp`),
 KEY `productDesc` (`productDesc`)
) ENGINE=MyISAM AUTO_INCREMENT=8 DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci

推荐答案

您的查询:

SELECT timestamp
FROM randomTable
ORDER BY timestamp ASC;

是完美的.但我怀疑您在帖子中提供的结果.你发布了:

is perfect. But I doubt about the results you have presented in your posting. You posted : 

2012-07-11 17:34:57
2012-07-11 17:33:07
2012-07-11 17:33:28

但是结果在你的sqlbox中显示:

But results in your sqlbox shows : 

2012-07-11 17:34:57
2012-07-15 17:33:07
2012-07-15 17:33:28

这是完全正确的.

这是您发帖中的拼写错误吗?
如果没有，请尝试以下操作:

Is that a typo error in your posting?
If no, then try the following : 

SELECT timestamp( `timestamp` ) as 'timestamp'
FROM randomTable
ORDER BY 1 ASC;

相关文章