Export all the columns from Sharepoint list via Powershell

Question

While exporting the data from Sharepoint via Powershell into a txt/csv file, I started to think, is there a way to choose all of the columns than writing all of the columns down to the code? because there are more of them than just 4...

and what does exportlist_all do in the powershell code?

$exportlist_all = @()
$columns = @("column1","column2","column3","column4")

Answer 1

With the script below you can easy export all column in a list a comma seperates file

Add-PsSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue -WarningAction SilentlyContinue | Out-Null 

$url = "<site url>"
$listName = "<list name>"
$path ="c:\Columns.csv"

$web = Get-SPWeb $url
$list = $web.Lists.TryGetList($listName)
$list.ContentTypes | % { $_.FieldLinks } | select Name |  Export-Csv -path $path

To export all internal name of fields in a list you can change the last line into

$list.Fields | select InternalName  |  Export-Csv -path $path

Answer 2

we can also try saving the list as template with content and then later on we can create list using using that template. I am not sure about your requirement but i think it will be easier.

Answer 3

This script accepts 2 parameters, the web url and the output path for the csv files (you must manually create the output path if it does not exist). It then get all lists and exports them to csv files where the names are the list title + .csv (yourListTitle.csv).

Here is the script:

Param(
 [Parameter(Mandatory=$True)]
 [string]$webUrl,
 [Parameter(Mandatory=$True)]
 [string]$outPath
)
$web = Get-SPWeb $webUrl
write-host ("Path: " + $outPath)
foreach($list in $web.Lists)
{
  $exportlist = $null
  $exportlist = @()
  $list.Items | foreach {
    $hash = $null
    $hash = @{}
    foreach($fld in $_.Fields ){
      Try {
        $hash.add($fld.Title, $_[$fld.Title])
      }
      Catch [System.Management.Automation.MethodInvocationException]
      {
        # Eating an error caused by duplicate column names.
      }
      Finally
      {
        #"End"
      }
    }
    write-host ("Exported: " + $_.Title)
    $obj = New-Object PSObject -Property $hash #@{
    $exportlist += $obj

  }
  $expath = $outPath + '\' + $list.Title + '.csv'
  $exportlist | Export-Csv -path $expath #$oPath

}

Source: http://porchcode.blogspot.com/2013/04/exporting-sharepoint-list-items-to-csv.html