Powershell - Process Uptime for multiple machines, saved to a table

get_process_uptime

. C:\powershell_scripts\out-datatable.ps1
. C:\powershell_scripts\write-datatable.ps1

$server_repository = 'myrepo'  
$database_repository = 'repodb'

#here we create $starttime, then it will get the values when passed through the for-each. Could just do inline, but it's a clever concept so leaving it here.
$StartTime= @{n='StartTime';e={$_.ConvertToDateTime($_.CreationDate)}}

#get list of servers we want to look at
$serverlist = invoke-sqlcmd -serverinstance $server_repository -database $database_repository `
-query "SELECT server FROM dbo.serverlist WHERE Connect = 1" 

$serverlist|%{
    #can't get it to select out otherwise; stupid datatables
    $computer = $_.server
 
    #use get-wmiobject to get details about "myprocess.exe", then pull in other details, 
    # round off the number of hours it's been running, etc., etc. 
    #The ManagementDateTimeConverter is needed for WMI DMTF dates, as per 
    # http://stackoverflow.com/questions/29838688/hours-between-two-times-within-a-select
    $details_table = gwmi win32_process -cn $_.server -filter "Name='myprocess.exe' AND CreationDate IS NOT NULL" | 
    select @{Name = 'Servername'; Expression = {"$computer"}},$StartTime, processid, path `
    , @{Name = 'HoursUptime'; Expression = {[math]::Round(([datetime](get-date) - [System.Management.ManagementDateTimeConverter]::ToDateTime($_.CreationDate)).TotalHours)}} |
    out-datatable
  
    Write-DataTable -ServerInstance $server_repository -Database $database_repository -TableName Scheduler_PID_Info -Data $details_table
    }