警告:Excel '07(至少)有一个(另一个)错误:如果字段的内容中有逗号，它不会正确解析="field, contents"，而是将逗号后的所有内容放入下面的字段中，而不管引号是什么。

我发现唯一有效的解决方法是当字段内容包含逗号时消除=。

这可能意味着有些字段不可能在Excel中完全“正确”地表示，但到目前为止，我相信没有人会感到太惊讶。

在微软Office 2016版本中，这仍然是一个问题，这让我们这些研究基因名称的人感到不安，如MARC1、MARCH1、SEPT1等。 我发现最实用的解决方案是在R中生成一个“。csv”文件，然后将与Excel用户打开/共享:

以文本(记事本)形式打开CSV文件 复制它(ctrl+a, ctrl+c)。 粘贴到一个新的excel表格中-它将全部粘贴在一列作为长文本字符串。 选择/选择此列。 转到Data-“Text to columns…”，在打开的窗口中选择“delimited”(下一步)。检查“逗号”被标记(标记它将显示数据与下面列的分离)(下一步)，在这个窗口中，您可以选择您想要的列并将其标记为文本(而不是通用)(完成)。

HTH

对于同样的问题，我所做的是在每个csv值之前添加以下内容: “=”“” 在Excel中打开文件之前，在每个CSV值后加上双引号。以以下值为例:

012345,00198475

在Excel中打开之前，这些应该更改为:

"="""012345","="""00198475"

这样做之后，每个单元格值在Excel中都显示为公式，因此不会格式化为数字、日期等。例如，012345的值显示为:

="012345"

在Excel 2010中打开一个新工作表。 在“数据”ribbon上单击“从文本中获取外部数据”。 选择您的CSV文件，然后单击“打开”。 单击“下一步”。 取消“Tab”，在“逗号”旁边打勾，然后点击“下一步”。 单击第一列上的任意位置。 按住shift键拖动滑块，直到可以单击最后一列，然后松开shift键。 点击“文本”单选按钮，然后点击“完成”

所有列都将作为文本导入，就像它们在CSV文件中一样。

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? .

SELECT CONCAT('\'',NOW(),'\''), firstname, lastname 
FROM your_table
INTO OUTFILE 'export.csv' 
FIELDS TERMINATED BY ',' 
ENCLOSED BY '\"' 
LINES TERMINATED BY '\n'