CSV(逗号分隔值)文件 [英] CSV(comma separated values) files
问题描述
您好!
当它表示没有关于从CSV文件中提取的数据类型的数据时,它是什么意思。
可以这样的人。
// Tony
< blockquote> On Mon,2008年8月11日13:49:19 +0200,Tony Johansson
< jo ***************** @ telia.comwrote:
>你好!
当它说没有关于数据的信息时是什么意思>从CSV文件中提取的数据类型。
有人可以吗。
// Tony
举一个简单的例子,一个包含123的CSV文件。你不能单独从CSV文件告诉
这是整数123,双是
123.0,字符串123和或者字符数组{''''',''''',''3''}。
将一些数据转换为CSV文件的字符串时
类型信息丢失。
HTH
rossum
8月11日,12:49 * pm,Tony Johansson < johansson.anders ... @ telia.com>
写道:
当它说不存在时是什么意思有关数据的信息
从CSV文件中提取的数据类型。
如果你澄清什么是它会有所帮助在这里。
Jon
Tony Johansson写道:
当它表示没有关于数据的信息时,这意味着什么?从CSV文件中提取的数据类型为
。
CSV不包含有关每列数据类型的信息。
这将是基于价值。
Arne
Hello!
What does it mean when it says that there is no information about the data
types of the data extracted from a CSV file.
Can somebody this.
//Tony
On Mon, 11 Aug 2008 13:49:19 +0200, "Tony Johansson"
<jo*****************@telia.comwrote:
>Hello!
What does it mean when it says that there is no information about the data
types of the data extracted from a CSV file.
Can somebody this.
//Tony
Take a simple example, a CSV file containing "123". You cannot tell
from the CSV file alone whether this is the integer 123, the double
123.0, the string "123" or the character array {''1'', ''2'', ''3''}.
When you convert some data into a string for a CSV file much of the
type information is lost.
HTH
rossum
On Aug 11, 12:49*pm, "Tony Johansson" <johansson.anders...@telia.com>
wrote:What does it mean when it says that there is no information about the data
types of the data extracted from a CSV file.It would help if you''d clarify what "it" is here.
Jon
Tony Johansson wrote:What does it mean when it says that there is no information about the data
types of the data extracted from a CSV file.The CSV does not contain information about the data type of each column.
It will be a guess based on the values.
Arne
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