Windows Powershell：如何比较两个 CSV 文件并输出仅在其中一个文件中但不在两个文件中的行

Question

我有一个文件first.csv

name,surname,height,city,county,state,zipCode
John,Doe,120,jefferson,Riverside,NJ,8075
Jack,Yan,220,Phila,Riverside,PA,9119
Jill,Fan,120,jefferson,Riverside,NJ,8075
Steve,Tan,220,Phila,Riverside,PA,9119
Alpha,Fan,120,jefferson,Riverside,NJ,8075

和second.csv

name,surname,height,city,county,state,zipCode
John,Doe,120,jefferson,Riverside,NJ,8075
Jack,Yan,220,Phila,Riverside,PA,9119
Jill,Fan,120,jefferson,Riverside,NJ,8075
Steve,Tan,220,Phila,Riverside,PA,9119
Bravo,Tan,220,Phila,Riverside,PA,9119

我想比较 first.csv 和 second.csv 文件的行并输出在 first.csv 或 second.csv 中，但不在两者中。

所以output.csv应该有

Alpha,Fan,120,jefferson,Riverside,NJ,8075
Bravo,Tan,220,Phila,Riverside,PA,9119

有很多类似的问题，但输出的结果不是我想要的。

谢谢

Answer 1

$filea = Import-Csv C:\Powershell\TestCSVs\group1.csv
$fileb = Import-Csv C:\Powershell\TestCSVs\group2.csv

Compare-Object $filea $fileb -Property name, surname, height, city, county, state, zipCode | Select-Object name, surname, height, city, county, state, zipCode | export-csv C:\Powershell\TestCSVs\out.csv -NoTypeInformation

我在此处使用所有字段进行比较和排序，但您可以指定要用于匹配行的唯一值。

输出

"name","surname","height","city","county","state","zipCode"     
"Bravo","Tan","220","Phila","Riverside","PA","9119"             
"Alpha","Fan","120","jefferson","Riverside","NJ","8075"

Answer 2

从两个列表中获取 symmetric difference（不相关的所有内容）实际上是比较对象时非常常见的用法。因此，我添加了这个功能(#30) to the Join-Object script/Join-Object Module (see also: In Powershell, what's the best way to join two tables into one?)。

对于这个具体问题：

PS C:\> Import-Csv .\First.csv |OuterJoin (Import-Csv .\Second.csv) |Format-Table

name  surname height city      county    state zipCode
----  ------- ------ ----      ------    ----- -------
Alpha Fan     120    jefferson Riverside NJ    8075
Bravo Tan     220    Phila     Riverside PA    9119

Windows Powershell：如何比较两个 CSV 文件并输出仅在其中一个文件中但不在两个文件中的行

Windows Powershell: How to compare two CSV files and output the rows that are just in either of the file but not in both

windows

csv

powershell

输出