Merge Two CSV Files Using Two Common Keys - csv

Question

Hello I Used below code to Merge CSV files using one common Key for adding one column from Child.CSV to Parent.CSV.
{
Import-Csv "D:\CSV check\Sourcecount.csv" -Header Sourcecount, MONTH_YEAR | ForEach-Object -Begin {
$Employees = #{}
} -Process {
$Employees.Add($_.MONTH_YEAR,$_.Sourcecount)
}
Import-Csv "D:\CSV check\RenameFinal.csv" | ForEach-Object {
$_ | Add-Member -MemberType NoteProperty -Name Sourcecount -Value $Employees."$($_.MONTH_YEAR)" -PassThru
} | Export-Csv -NoTypeInformation "D:\CSV check\sourcefinal.csv"
}
Question:
Can you please help for the scenario joining for getting one column value from child.csv to Parent.csv for two common keys (by data and by userid).

Answer 1

Below is the code I used to solve the above Query:
$f2=Import-Csv "D:\Sourcecount.csv" -Header Sourcecount,MONTH_YEAR,UserID
$f1= Import-csv "D:\Final.csv" -Header MONTH_YEAR,DestinationCount,UserID,Result,SourceCount
$f1|
%{
$Month_YEAR=$_.MONTH_YEAR
$UserID=$_.UserID
$m=$f2|?{$_.MONTH_YEAR -eq $Month_YEAR}|?{$_.UserID -eq $UserID}
$_.SourceCount=$m.Sourcecount
}
$f1| Export-Csv "D:\SourceFinal.csv" -NoTypeInformation