functions/Get-DbaProcess.ps1

function Get-DbaProcess {
    <#
        .SYNOPSIS
            This command displays SQL Server processes.
 
        .DESCRIPTION
            This command displays processes associated with a spid, login, host, program or database.
             
            Thanks to Michael J Swart at https://sqlperformance.com/2017/07/sql-performance/find-database-connection-leaks for the
            query to get the last executed SQL statement, minutesasleep and host process ID
     
        .PARAMETER SqlInstance
            The SQL Server instance.
 
        .PARAMETER SqlCredential
            Allows you to login to servers using SQL Logins as opposed to Windows Auth/Integrated/Trusted.
 
        .PARAMETER Spid
            This parameter is auto-populated from -SqlInstance. You can specify one or more Spids (including blocking spids) to be displayed.
 
        .PARAMETER Login
            This parameter is auto-populated from-SqlInstance and allows only login names that have active processes. You can specify one or more logins whose processes will be displayed.
 
        .PARAMETER Hostname
            This parameter is auto-populated from -SqlInstance and allows only host names that have active processes. You can specify one or more Hosts whose processes will be displayed.
 
        .PARAMETER Program
            This parameter is auto-populated from -SqlInstance and allows only program names that have active processes. You can specify one or more Programs whose processes will be displayed.
 
        .PARAMETER Database
            This parameter is auto-populated from -SqlInstance and allows only database names that have active processes. You can specify one or more Databases whose processes will be displayed.
 
        .PARAMETER ExcludeSpid
            This parameter is auto-populated from -SqlInstance. You can specify one or more Spids to exclude from being displayed (goes well with Logins).
 
            Exclude is the last filter to run, so even if a Spid matches, for example, Hosts, if it's listed in Exclude it wil be excluded.
 
        .PARAMETER NoSystemSpid
            Ignores the System Spids
             
        .PARAMETER Silent
        Use this switch to disable any kind of verbose messages
     
        .NOTES
            Website: https://dbatools.io
            Copyright: (C) Chrissy LeMaire, clemaire@gmail.com
            License: GNU GPL v3 https://opensource.org/licenses/GPL-3.0
 
        .LINK
            https://dbatools.io/Get-DbaProcess
 
        .EXAMPLE
            Get-DbaProcess -SqlInstance sqlserver2014a -Login base\ctrlb, sa
 
            Shows information about the processes for base\ctrlb and sa on sqlserver2014a. Uses Windows Authentication to login to sqlserver2014a.
 
        .EXAMPLE
            Get-DbaProcess -SqlInstance sqlserver2014a -SqlCredential $credential -Spid 56, 77
                 
            Shows information about the processes for spid 56 and 57. Uses alternative (SQL or Windows) credentials to login to sqlserver2014a.
 
        .EXAMPLE
            Get-DbaProcess -SqlInstance sqlserver2014a -Program 'Microsoft SQL Server Management Studio'
                 
            Shows information about the processes that were created in Microsoft SQL Server Management Studio.
 
        .EXAMPLE
            Get-DbaProcess -SqlInstance sqlserver2014a -Host workstationx, server100
                 
            Shows information about the processes that were initiated by hosts (computers/clients) workstationx and server 1000.
    #>

    [CmdletBinding()]
    Param (
        [parameter(Mandatory = $true, ValueFromPipeline = $true)]
        [Alias("ServerInstance", "SqlServer")]
        [DbaInstanceParameter[]]$SqlInstance,
        [Alias("Credential")]
        [PSCredential]
        $SqlCredential,
        [int[]]$Spid,
        [int[]]$ExcludeSpid,
        [string[]]$Database,
        [string[]]$Login,
        [string[]]$Hostname,
        [string[]]$Program,
        [switch]$NoSystemSpid,
        [switch]$Silent
    )
    
    process {
        foreach ($instance in $sqlinstance) {
            
            Write-Message -Message "Attempting to connect to $instance" -Level Verbose
            try {
                $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential
            }
            catch {
                Stop-Function -Message "Could not connect to Sql Server instance $instance : $_" -Target $instance -ErrorRecord $_ -Continue
            }
            
            $sql = "SELECT datediff(minute, s.last_request_end_time, getdate()) as MinutesAsleep, s.session_id as spid, s.host_process_id as HostProcessId, t.text as Query,
                    s.login_time as LoginTime,s.client_version as ClientVersion, s.last_request_start_time as LastRequestStartTime, s.last_request_end_time as LastRequestEndTime,
                    c.net_transport as NetTransport, c.encrypt_option as EncryptOption, c.auth_scheme as AuthScheme, c.net_packet_size as NetPacketSize, c.client_net_address as ClientNetAddress
                    FROM sys.dm_exec_connections c join sys.dm_exec_sessions s on c.session_id = s.session_id cross apply sys.dm_exec_sql_text(c.most_recent_sql_handle) t"

            
            if ($server.VersionMajor -gt 8) {
                $results = $server.Query($sql)
            }
            else {
                $results = $null
            }
            
            $allsessions = @()
            
            $processes = $server.EnumProcesses()
            
            if ($Login) {
                $allsessions += $processes | Where-Object { $_.Login -in $Login -and $_.Spid -notin $allsessions.Spid }
            }
            
            if ($Spid) {
                $allsessions += $processes | Where-Object { ($_.Spid -in $Spid -or $_.BlockingSpid -in $Spid) -and $_.Spid -notin $allsessions.Spid }
            }
            
            if ($Hostname) {
                $allsessions += $processes | Where-Object { $_.Host -in $Hostname -and $_.Spid -notin $allsessions.Spid }
            }
            
            if ($Program) {
                $allsessions += $processes | Where-Object { $_.Program -in $Program -and $_.Spid -notin $allsessions.Spid }
            }
            
            if ($Database) {
                $allsessions += $processes | Where-Object { $Database -contains $_.Database -and $_.Spid -notin $allsessions.Spid }
            }
                        
            if (Test-Bound -not 'Login','Spid','ExcludeSpid','Host', 'Program','Database') {
                $allsessions = $processes
            }
            
            if ($NoSystemSpid -eq $true) {
                $allsessions = $allsessions | Where-Object { $_.Spid -gt 50 }
            }
            
            if ($Exclude) {
                $allsessions = $allsessions | Where-Object { $Exclude -notcontains $_.SPID -and $_.Spid -notin $allsessions.Spid }
            }
            
            foreach ($session in $allsessions) {
                
                if ($session.Status -eq "") {
                    $status = "sleeping"
                }
                else {
                    $status = $session.Status
                }
                
                if ($session.Command -eq "") {
                    $command = "AWAITING COMMAND"
                }
                else {
                    $command = $session.Command
                }
                
                $row = $results | Where-Object { $_.Spid -eq $session.Spid }

                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name Parent -value $server
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name ComputerName -value $server.NetName
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name InstanceName -value $server.ServiceName
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name SqlInstance -value $server.DomainInstanceName
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name Status -value $status
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name Command -value $command
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name HostProcessId -value $row.HostProcessId
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name MinutesAsleep -value $row.MinutesAsleep
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name LoginTime -value $row.LoginTime
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name ClientVersion -value $row.ClientVersion
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name LastRequestStartTime -value $row.LastRequestStartTime
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name LastRequestEndTime -value $row.LastRequestEndTime
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name NetTransport -value $row.NetTransport
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name EncryptOption -value $row.EncryptOption
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name AuthScheme -value $row.AuthScheme
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name NetPacketSize -value $row.NetPacketSize
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name ClientNetAddress -value $row.ClientNetAddress
                Add-Member -Force -InputObject $session -MemberType NoteProperty -Name LastQuery -value $row.Query
                
                Select-DefaultView -InputObject $session -Property ComputerName, InstanceName, SqlInstance, Spid, Login, LoginTime, Host, Database, BlockingSpid, Program, Status, Command, Cpu, MemUsage, LastRequestStartTime, LastRequestEndTime, MinutesAsleep, ClientNetAddress, NetTransport, EncryptOption, AuthScheme, NetPacketSize, ClientVersion, HostProcessId, IsSystem, LastQuery
            }
        }
    }
}