PowerShell Compare-Object 和 Export-Csv 导出错误数据

Question

问题

我有两个 CSV 文件，文件 A 和文件 B。两个文件包含相同的 header。
这些文件包含有关报价和订单的信息。

文件 A 首先创建，假设是 10:00 上午。文件 B 创建于上午 11:00。那是状态列值从“报价单”更新为“订单”的时候，可能还有一些其他细节。

我结合使用 Compare-Object 和 Export-Csv 将差异导出到新的 CSV 文件，但应该只导出最新（最新）的信息。
问题是：Compare-Object 正确检测到特定行已被更改，但它没有使用文件 B 中的数据，而是使用文件 A（旧版本）中的数据。

示例（文件内容）

我已经用粗体突出显示了更改的字段。

文件A

"CustomerName","Address","Postalcode","City","ReferenceNumber","CustomerNumber","Statuscode","DeliveryWeek","WorkDescription","Status","OrderReference","Advisor"  
"Example Customer","Example Address 1","9999 EX","EXAMPLE CITY","217098","8629",**"Quote"**,**""**,"Example Product","Example Status","Private","Example Advisor"

文件B

"CustomerName","Address","Postalcode","City","ReferenceNumber","CustomerNumber","Statuscode","DeliveryWeek","WorkDescription","Status","OrderReference","Advisor"  
"Example Customer","Example Address 1","9999 EX","EXAMPLE CITY","217098","8629",**"Order"**,**"Call-off"**,"Example Product","Example Status","Private","Example Advisor"

脚本

好的，那里有很多行。我将分享我认为问题所在的行。

$timestamp = (get-date -UFormat "%A %d-%m-%Y %R" | ForEach-Object { $_ -replace ":", "-" })
$prefix="Export-"
$exportlocation = "C:\Users\username\Desktop\UTF8-format\" 
$ExportChangesFolder = "C:\Users\username\Desktop\Changes\"

$PreviousCSV = Import-Csv $PreviousFile -Header "CustomerName","Address","Postalcode","City","ReferenceNumber","CustomerNumber","Statuscode","DeliveryWeek","WorkDescription","Status","OrderReference","Advisor"
$NewCSV = Import-Csv $exportlocation$prefix$timestamp".csv" -Header "CustomerName","Address","Postalcode","City","ReferenceNumber","CustomerNumber","Statuscode","DeliveryWeek","WorkDescription","Status","OrderReference","Advisor"

$propsToCompare = $PreviousCSV[0].psobject.properties.name
Compare-Object -ReferenceObject $PreviousCSV -DifferenceObject $NewCSV -Property $propsToCompare -PassThru | select $propsToCompare | sort -Unique -Property "ReferenceNumber" | Select-Object * -ExcludeProperty SideIndicator | Export-Csv $ExportChangesFolder$prefix$timestamp".csv" -NoTypeInformation

通常，所有文件名都会自动填充，因为这是使用 Windows 任务计划程序设置的重复性任务。在故障排除期间，我手动填写了声明变量的文件名。每次我运行它手动，它工作正常！

Answer 1

我认为您可能缺少的是 SideIndicator。您应该能够选择您想要的 SideIndicators 列表，其中“<=”是仅存在于左侧 csv 中的内容，“=>”是仅存在于左侧 csv 中的内容右边.

看起来您还指定了 headers，然后从 csv 中获取了 headers，但您提到它们具有相同的 headers?

Get-Date 在运行时针对 Import-Csv 的现有文件也有点令人困惑，但我猜测在导入之前构建此 csv 的脚本还有更多内容 Get-Date 运行。

这是对我有用的东西：

$timestamp = ((get-date -UFormat "%A %d-%m-%Y %R") -replace ":", "-")
$prefix="Export-"
$exportLocation = "C:\Users\username\Desktop\UTF8-format\" 
$exportChangesFolder = "C:\Users\username\Desktop\Changes\"

$headers = $previousCSV[0].psobject.properties.name

$previousCSV = Import-Csv $previousFile
$newCSV = Import-Csv $exportLocation$prefix$timestamp".csv"

$compareParams = @{
    ReferenceObject  = $previousCSV
    DifferenceObject = $newCSV
    Property         = $headers
    PassThru         = $true
}

Compare-Object @compareParams |
    Where-Object {$_.SideIndicator -eq "=>"} |
    Select-Object $headers | 
    Sort-Object -Unique -Property "ReferenceNumber" | 
    Select-Object * -ExcludeProperty SideIndicator |
    Export-Csv $exportChangesFolder$prefix$timestamp".csv" -NoTypeInformation

PowerShell Compare-Object 和 Export-Csv 导出错误数据

PowerShell Compare-Object and Export-Csv exporting wrong data

csv

powershell

compareobject

问题

示例（文件内容）

脚本