$SQLUser = "Username"
$SQLPasswordFile = "\pathtoUserPW.txt"
$SQLKeyFile = "\pathtoUserPW.key"
$SQLkey = Get-Content $SQLKeyFile
$SQLMyCredential = New-Object -TypeName System.Management.Automation.PSCredential `
-ArgumentList $SQLUser, (Get-Content $SQLPasswordFile | ConvertTo-SecureString -Key $SQLkey)
$SQLCredentials = Get-Credential -Credential $SQLMyCredential
$SQLSession = New-PSSession -ComputerName "uhpkpdb01" -Credential $SQLCredentials
Invoke-Command -Session $SQLSession -ScriptBlock {
$exist = Invoke-Sqlcmd "select count(1) from [table] where USER_NAME = '$($args[0])'" -ServerInstance "SERVERNAME"
if ($exist.column1 -eq "1") {
Invoke-Sqlcmd "UPDATE [table] SET PASSWORD = '$($args[1])' WHERE USER_NAME = '$($args[0])'"
Write-Host "Account Updated"  }
else {
Write-Host "User Does Not Exists"}} -ArgumentList $env:USERNAME, "PASSWORD"
Remove-PSSession $SQLSession