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I want to compare some items in 2 Lists:

Update item "Company Name" in List 2 when it not match with item "Existing Company" in List 1.

I don't know how to proceed!

  • How do you match two items? Do they have the same name? – helb Nov 9 '18 at 13:25
  • I have a workflow that copy the value from the item in List 1 in item of List 2. Now I want to Update this items. – Jihen Nov 9 '18 at 13:47
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It is not quite clear how You decide (based on what properties) which items from "List 2" needs to be updated.

But in general it seems that You could use this script - please adjust based on Your system values (webs URL, list names, field internal names etc).

$snapin = Get-PSSnapin | Where-Object {$_.Name -eq 'Microsoft.SharePoint.Powershell'}
if ($snapin -eq $null) { Add-PSSnapin Microsoft.SharePoint.Powershell }

$web = Get-SPWeb "https://www.contoso.com"

$list1 = $web.Lists["List Name 1"]
$list2 = $web.Lists["List Name 2"]

foreach($item1 in $list1.Items)
{
    $searchValue = $item1["Title"]

    $query = New-Object Microsoft.SharePoint.SPQuery
    $query.ViewAttributes = "Scope='Recursive'"
    $query.Query = "<Where><Contains><FieldRef Name='Title' /><Value Type='Text'>" + $searchValue + "</Value></Contains></Where>"
    $query.RowLimit = 10    
    # leave value 10 to catch if multiple items are found OR change to 1 and remove "if-else-else" if you are sure for unique matching

    $items2 = $list2.GetItems($query)

    if($items2.Count -eq 1)
    {   
        # if values are unique, item collection "$items2" should contain only one item 
        $item2 = $items2[0]

        $item2["Field 1"] = $item1["Other Field"]
        $item2["Field 2"] = "lorem ipsum"

        $item2.Update()
    } 
    else if ($items2.Count -eq 0)   
    {
        Write-host "# No matching items found for value:" + $searchValue 
    } 
    else 
    {
        Write-host "# Multiple matching items found for value:" + $searchValue 
    }
}

$web.Dispose();
Write-Host "End" -b DarkGreen -f Green

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