Working with Arrays, Matching and Comparing

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    by maverick918 at 2013-04-06 12:58:19

    So I'm having this issue I've been researching and I was wondering if anyone has run into this before.

    I have two CSV files that I'm importing into my powershell script

    Lets call them


    Both contain one column that match. Depending on this matching column I would like to have whatever is in that column added to a master column. Let me show you.



    If $A.Number and $B.Number Match I would like to have another object that looks like this


    But there are multiple columns like this in each CSV file and $A.Number and $B.Number are sometimes in a random order, however they will always have the same amount of numbers. I've been doing research on this but I haven't found anything that is exactly what I'm looking to do, maybe a nested foreach with an if statement.

    Let me know if you guys have ever had to do anything like this.


    by coderaven at 2013-04-06 13:20:09

    Let me see if I can work you up an example.
    $A = Import-Csv -Path ...
    $B = Import-Csv -Path ...

    foreach ($AObj in $A)
    foreach ($BObj in $B)
    if ($AObj.Number -eq $BObj.Number)
    New-PSObject -TypeName PSObject -Property @{ `
    "Number" = $AObj.Number;
    "Letter" = $AObj.Letter;
    "Label" = $AObj.Label;
    "File" = $BObj.File;
    "Size" = $BObj.Size;
    "Lun" = $BObj.Lun;
    }#end PSObject Hashtable
    }#end if
    }#end for B
    }#end for A

    The output should give you the result you are wanting. You can take that output and export-csv.

    by maverick918 at 2013-04-06 13:45:01


    Thank you so much. You.Are.Awesome.

    This worked perfectly.

    by Lembasts at 2013-04-07 16:42:27

    If you sorted the files by number you could use my little join-csv utility... ... 60#content

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