Find and remove duplicated records in SharePoint list
Today I was surprised to see duplicated records in SharePoint list which I imported and updated from XML-files. So I started to find a solution to find duplicated records, see them and delete.
Below I post a powershell script to find and remove duplicated records. It was found using google-search, and added string not to remove duplicated records immediately, but to see them at first.
Add-PSSnapin microsoft.sharepoint.powershell
$web = Get-SPWeb -Identity http://spdev/vc
$list = $web.Lists["companies"]
$AllDuplicates = $list.Items.GetDataTable() | Group-Object title | where {$_.count -gt 1}
$count = 1
$max = $AllDuplicates.Count
foreach($duplicate in $AllDuplicates)
{
#uncomment string below to delete duplicated records
#$duplicate.group | Select-Object -Skip 1 | % {$list.GetItemById($_.ID).Delete()}
#string below displays found duplicated records
Write-Host $duplicate.Name
}
Remove-PsSnapin Microsoft.SharePoint.PowerShell

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