Question

我正在编写一个比较两个CSV的函数，但是一旦到达比较部分，我就会收到错误。我只想指出那些列在其中一个中的元素。

实际代码

function Compare ($location1, $location2)
{
    #work in progress   
    $CSV1 = Import-Csv -Path $location1 -UseCulture
    $CSV2 = Import-Csv -Path $location2 -UseCulture
    $Compared = Compare-Object -ReferenceObject $CSV1 -DifferenceObject $CSV2 |
                select -ExpandProperty InputObject |
                sort
    [void] $CSV1
    [void] $CSV2
    return $Compared
}

以及来自两个CSV的代码段：

代码段A：

a
b
c
d
e
f
g

摘录B：

a
b
c
d
e
h
f
g
h
i
j

这些是用于测试目的，看它是否有效，但现在它甚至没有开始比较。

当我在控制台中查找时，两个CSV正确加载。

Answer 1

我会这样做：

我在名为“Name”的第一行添加了一个列名。因此，使用该集，您可以将其作为属性访问。所以

$CSV1 = $null
$CSV2 = $null

$CSV1 = Import-Csv -Path 'C:\temp\pos\reference.csv' 
$CSV2 = Import-Csv -Path 'C:\temp\pos\difference.csv'

$dif = Compare-Object -ReferenceObject $CSV1 -DifferenceObject $CSV2 -Property Name

foreach($y in $dif){
   if($y.SideIndicator -eq "=>"){
    write-output $y.name "Is present in the difference but not in reference."
   }
   if($y.SideIndicator -eq "<="){
    write-output $y.Name "Is present in reference but not in difference"
   }

}

<# content csv1 (reference.csv)
Name
a
b
c
5
d
e
f
g
9
#>
<#content csv2 (difference.csv)
Name
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
#>

这会给我输出：

h Is present in the difference but not in reference.
i Is present in the difference but not in reference.
j Is present in the difference but not in reference.
k Is present in the difference but not in reference.
l Is present in the difference but not in reference.
m Is present in the difference but not in reference.
n Is present in the difference but not in reference.
o Is present in the difference but not in reference.
p Is present in the difference but not in reference.
5 Is present in reference but not in difference
9 Is present in reference but not in difference

Answer 2

我担心比较对象不能像那样工作。根据我的理解，您正在尝试在两者中找到独特的项目。最简单的方法是将两个CSV一起添加，并在要获得唯一属性的属性上执行select-object -Unique。

($csv1 + $csv2).Name | Select-Object -Unique

我假设CSV中数据的列名是＆＃39;名称＆＃39;

用于比较缺失元素的2个CSV的功能

2 个答案: