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• 我能够使用符合惯例的MySQL日期实地类型
原标题:Can I use MySQL date field type with custom date format
  • 时间:2009-12-23 23:36:06
  •  标签:
  • mysql

I have a MySQL database with two fields: Date and Value. My dates are quarters (Q1-2007, Q2-2008...). I want to be able to use the following SQL query:

www.un.org/spanish/sc/presidency.asp * 摘自按日期分列的WHERE 1 ORDER()。

我如何能够这样做?

问题回答

我猜测你想他们会命令他们,以便所有2007年的数字都按2008年顺序排列。 这一工作应当:

SELECT * FROM table WHERE 1 ORDER BY SUBSTRING(Date, 4, 4), SUBSTRING(Date, 1, 2);

假设你的日期格式是完全一致的,并且你是 日期栏实际上是VARCHAR或类似的......

使用日期栏,并决定每个季度的日期。 然后,你可以利用所建的职能进行日期。

页: 1 * 摘自按日期分列的WHERE 1 ORDER()。 <代码>Date as Q1-2007,Q2-2007,Q3-2007,Q4-2007? 如果是这样的话,那么应该是怎样分类。

如果届时我会建立一个数据库,以包含这些价值观,那么我就将使用3个领域,并在季度和年份使用两个不同的领域。





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