不是Excel。Windows可以识别公式、数据作为日期并自动更正。你必须更改Windows的设置。

“控制面板”(->“切换到经典视图”)->“区域和语言” 选项”->选项卡“区域选项”->“自定义…”->选项卡“数字”->和 然后根据你想要的改变符号。

http://www.pcreview.co.uk/forums/enable-disable-auto-convert-number-date-t3791902.html

它将在您的计算机上工作，如果这些设置没有更改，例如在您的客户的计算机上，他们将看到日期而不是数据。

下面是我们在生成csv文件时使用的简单方法，它确实会稍微改变值，所以并不适用于所有应用程序:

在csv中的所有值前加一个空格

excel将从诸如“1”、“2.3”和“-2.9e4”等数字中剥离该空格，但将保留诸如“01/10/1993”这样的日期和诸如“TRUE”这样的布尔值，从而阻止它们转换为excel的内部数据类型。

它也停止双引号被zapped在读进去，所以一个简单的方法，使文本在csv中保持不变的excel即使是一些文本，如“3.1415”是用双引号包围它，并在整个字符串前加上一个空格，即(使用单引号来显示你会键入什么)“3.1415”。然后在excel中，你总是有原始的字符串，除了它被双引号包围并以空格开头，所以你需要在任何公式中考虑这些。

I know this is an old question, but the problem is not going away soon. CSV files are easy to generate from most programming languages, rather small, human-readable in a crunch with a plain text editor, and ubiquitous. The problem is not only with dates in text fields, but anything numeric also gets converted from text to numbers. A couple of examples where this is problematic: ZIP/postal codes telephone numbers government ID numbers which sometimes can start with one or more zeroes (0), which get thrown away when converted to numeric. Or the value contains characters that can be confused with mathematical operators (as in dates: /, -). Two cases that I can think of that the "prepending =" solution, as mentioned previously, might not be ideal is where the file might be imported into a program other than MS Excel (MS Word's Mail Merge function comes to mind), where human-readability might be important. My hack to work around this If one pre/appends a non-numeric and/or non-date character in the value, the value will be recognized as text and not converted. A non-printing character would be good as it will not alter the displayed value. However, the plain old space character (\s, ASCII 32) doesn't work for this as it gets chopped off by Excel and then the value still gets converted. But there are various other printing and non-printing space characters that will work well. The easiest however is to append (add after) the simple tab character (\t, ASCII 9). Benefits of this approach: Available from keyboard or with an easy-to-remember ASCII code (9), It doesn't bother the importation, Normally does not bother Mail Merge results (depending on the template layout - but normally it just adds a wide space at the end of a line). (If this is however a problem, look at other characters e.g. the zero-width space (ZWSP, Unicode U+200B) is not a big hindrance when viewing the CSV in Notepad (etc), and could be removed by find/replace in Excel (or Notepad etc). You don't need to import the CSV, but can simply double-click to open the CSV in Excel. If there's a reason you don't want to use the tab, look in an Unicode table for something else suitable. Another option might be to generate XML files, for which a certain format also is accepted for import by newer MS Excel versions, and which allows a lot more options similar to .XLS format, but I don't have experience with this. So there are various options. Depending on your requirements/application, one might be better than another. Addition It needs to be said that newer versions (2013+) of MS Excel don't open the CSV in spreadsheet format any more - one more speedbump in one's workflow making Excel less useful... At least, instructions exist for getting around it. See e.g. this Stackoverflow: How to correctly display .csv files within Excel 2013? .

2018

唯一适合我的解决方案(也没有修改CSV)。

Excel 2010:

创建新工作簿 数据>从文本>选择您的CSV文件 在弹出框中选择“Delimited”单选按钮，然后点击“Next >” 分隔符复选框:只勾选“逗号”，取消勾选其他选项，然后单击“下一步>” 在“数据预览”中，滚动到最右，然后按住shift并单击最后一列(这将选中所有列)。现在在“列数据格式”中选择单选按钮“文本”，然后单击“完成”。

Excel office365:(客户端版本)

创建新工作簿 数据>从文本/CSV >选择您的CSV文件 数据类型检测>不检测

注意:Excel office365 (web版本)，当我写这篇文章时，你将无法做到这一点。

不是Excel。Windows可以识别公式、数据作为日期并自动更正。你必须更改Windows的设置。

“控制面板”(->“切换到经典视图”)->“区域和语言” 选项”->选项卡“区域选项”->“自定义…”->选项卡“数字”->和 然后根据你想要的改变符号。

http://www.pcreview.co.uk/forums/enable-disable-auto-convert-number-date-t3791902.html

它将在您的计算机上工作，如果这些设置没有更改，例如在您的客户的计算机上，他们将看到日期而不是数据。

在我的案例中，使用R生成的csv文件中的“Sept8”被Excel 2013转换为“8-Sept”。该问题通过使用xlsx包中的write.xlsx2()函数生成xlsx格式的输出文件来解决，该输出文件可以由Excel加载，而无需进行不必要的转换。因此，如果给你一个csv文件，你可以尝试将它加载到R中，并使用write.xlsx2()函数将其转换为xlsx。