Out-DataTable.ps1
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function Out-DataTable { <# .SYNOPSIS Creates a DataTable for an object .DESCRIPTION Creates a DataTable based on an object's properties. .PARAMETER InputObject One or more objects to convert into a DataTable .PARAMETER NonNullable A list of columns to set disable AllowDBNull on .INPUTS Object Any object can be piped to Out-DataTable .OUTPUTS System.Data.DataTable .EXAMPLE $dt = Get-psdrive | Out-DataTable # This example creates a DataTable from the properties of Get-psdrive and assigns output to $dt variable .EXAMPLE Get-Process | Select Name, CPU | Out-DataTable | Invoke-SQLBulkCopy -ServerInstance $SQLInstance -Database $Database -Table $SQLTable -force -verbose # Get a list of processes and their CPU, create a datatable, bulk import that data .NOTES Adapted from script by Marc van Orsouw and function from Chad Miller Version History v1.0 - Chad Miller - Initial Release v1.1 - Chad Miller - Fixed Issue with Properties v1.2 - Chad Miller - Added setting column datatype by property as suggested by emp0 v1.3 - Chad Miller - Corrected issue with setting datatype on empty properties v1.4 - Chad Miller - Corrected issue with DBNull v1.5 - Chad Miller - Updated example v1.6 - Chad Miller - Added column datatype logic with default to string v1.7 - Chad Miller - Fixed issue with IsArray v1.8 - ramblingcookiemonster - Removed if($Value) logic. This would not catch empty strings, zero, $false and other non-null items - Added perhaps pointless error handling .LINK https://github.com/RamblingCookieMonster/PowerShell .LINK Invoke-SQLBulkCopy .LINK Invoke-Sqlcmd2 .LINK New-SQLConnection .FUNCTIONALITY SQL #> [CmdletBinding()] [OutputType([System.Data.DataTable])] param( [Parameter( Position=0, Mandatory=$true, ValueFromPipeline = $true)] [PSObject[]]$InputObject, [string[]]$NonNullable = @() ) Begin { $dt = New-Object Data.datatable $First = $true function Get-ODTType { param($type) $types = @( 'System.Boolean', 'System.Byte[]', 'System.Byte', 'System.Char', 'System.Datetime', 'System.Decimal', 'System.Double', 'System.Guid', 'System.Int16', 'System.Int32', 'System.Int64', 'System.Single', 'System.UInt16', 'System.UInt32', 'System.UInt64') if ( $types -contains $type ) { Write-Output "$type" } else { Write-Output 'System.String' } } #Get-Type } Process { foreach ($Object in $InputObject) { $DR = $DT.NewRow() foreach ($Property in $Object.PsObject.Properties) { $Name = $Property.Name $Value = $Property.Value #RCM: what if the first property is not reflective of all the properties? Unlikely, but... if ($First) { $Col = New-Object Data.DataColumn $Col.ColumnName = $Name #If it's not DBNull or Null, get the type if ($Value -isnot [System.DBNull] -and $Value -ne $null) { $Col.DataType = [System.Type]::GetType( $(Get-ODTType $property.TypeNameOfValue) ) } #Set it to nonnullable if specified if ($NonNullable -contains $Name ) { $col.AllowDBNull = $false } try { $DT.Columns.Add($Col) } catch { Write-Error "Could not add column $($Col | Out-String) for property '$Name' with value '$Value' and type '$($Value.GetType().FullName)':`n$_" } } Try { #Handle arrays and nulls if ($property.GetType().IsArray) { $DR.Item($Name) = $Value | ConvertTo-XML -As String -NoTypeInformation -Depth 1 } elseif($Value -eq $null) { $DR.Item($Name) = [DBNull]::Value } else { $DR.Item($Name) = $Value } } Catch { Write-Error "Could not add property '$Name' with value '$Value' and type '$($Value.GetType().FullName)'" continue } #Did we get a null or dbnull for a non-nullable item? let the user know. if($NonNullable -contains $Name -and ($Value -is [System.DBNull] -or $Value -eq $null)) { write-verbose "NonNullable property '$Name' with null value found: $($object | out-string)" } } Try { $DT.Rows.Add($DR) } Catch { Write-Error "Failed to add row '$($DR | Out-String)':`n$_" } $First = $false } } End { Write-Output @(,$dt) } } #Out-DataTable |