Function Start-PollForCommands
{
    while ($true)
    {
        ####
        # Section 1: Obtain Scrape Commands
        ####
        # Build up SQL query
        [string] $Server = ""
        [string] $Database = "Main_DB"
        [string] $UserSqlQuery= "SELECT
            FROM X.Y
            WHERE XYZ"
        [string] $SQLUser = "Redacted"
        [string] $SQLPW = "Redacted"

        function ExecuteSqlQuery ($Server, $Database, $SQLQuery)
        {
            $Datatable = New-Object System.Data.DataTable
            $Connection = New-Object System.Data.SQLClient.SQLConnection
            $Connection.ConnectionString = "server='$Server';database='$Database';User ID ='$SQLUser';Password='$SQLPW';"
            #Write-host $Connection.ConnectionString
            $Connection.Open()
            $Command = New-Object System.Data.SQLClient.SQLCommand
            $Command.Connection = $Connection
            $Command.CommandText = $SQLQuery
            $Reader = $Command.ExecuteReader()
            $Datatable.Load($Reader)
            $Connection.Close()

            return $Datatable
        }

        $resultsDataTable = New-Object System.Data.DataTable
        $resultsDataTable = ExecuteSqlQuery $Server $Database $UserSqlQuery

        if ($resultsDataTable -eq $null)
        {
            $output =  "no rows returned!"
            exit 2
        }

        # UPDATE SQL and set the RequestDate = GetDate()
        $rowID = $resultsDataTable.ForEach("RowID")
        foreach ($r in $rowID)
        {
            $UpdateQuery = "UPDATE Database.Table
            SET RequestDate = GETDATE()
            WHERE RowID = {0}" -f $r
            ExecuteSQLQuery $Server $Database $UpdateQuery
        }

        $threads = $resultsDataTable.Count
        $array = 1..$threads # we can set number of threads 1..1 number of commands
        $scrapeCommand = $resultsDataTable.ForEach("CmdToInvoke")

        ####
        # Section 2 run scrape commands in parallel
        ####
        # This script block will run the psexec command
        $ScriptBlock = {
            Param (
                [string]$scrapeCommand
            )
            $PSExec = "D:pstoolsPsExec.exe"
            $scrapeCommand = $scrapeCommand.ToString().Substring(18) # keep command args only
            Start-Process -FilePath $PSExec -ArgumentList $scrapeCommand
        }

        # Create session state
        $myString = "this is session state!"
        $sessionState = [System.Management.Automation.Runspaces.InitialSessionState]::CreateDefault()
        $sessionstate.Variables.Add((New-Object -TypeName System.Management.Automation.Runspaces.SessionStateVariableEntry -ArgumentList "myString" ,$myString, "example string"))

        # Create runspace pool consisting of $Threads runspaces
        $RunspacePool = [RunspaceFactory]::CreateRunspacePool(1, $threads, $sessionState, $Host)
        $RunspacePool.Open()

        $Jobs = @()
        $array | % {
            $scrapeCommand = $scrapeCommand[$array]
            $rowID = $rowID[$array]
            $Job = [powershell]::Create().AddScript($ScriptBlock).AddParameter("scrapeCommand", $scrapeCommand)
            $Job.RunspacePool = $RunspacePool
            $Jobs += New-Object PSObject -Property @{
                RunNum = $_
                Job = $Job
                Result = $Job.BeginInvoke()
            }
        }
    Start-Sleep 1
    }
}