Azure/Powershell: Checking to see if a SQL Server exists - sql-server

Question

I'm coming from a C# background, and this is my first foray into Powershell. I'm trying to write a Powershell script that does a whole bunch of stuff in Azure, among them:
Check to see if a SQL Server instance exists
Create a server (using New-AzureRmSqlServer) if it does not
Create a new DB on the server
... and some other stuff
My first problem is that if the server already exists, I don't need to create it; I can just go directly to the DB creation. However, I can't seem to make that work.
I tried Get-AzureRmSqlServer, but that errors out if it can't find the server I'm looking for. Finally, I went with this function to return $true if found and $false if not:
function Check-For-Server
{
Param(
[Parameter(Mandatory=$true)]
[String]
$ServerName
)
if (Test-AzureName -Name $ServerName)
{
return $false
}
else
{
return $true
}
}
Here's the problem: I'm getting the following error:
Test-AzureName : Parameter set cannot be resolved using the specified named parameters.
At C:\src\Powershell\test.ps1:10 char:9
+ if (Test-AzureName -Name $ServerName)
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Test-AzureName], ParameterBindingException
+ FullyQualifiedErrorId : AmbiguousParameterSet,Microsoft.WindowsAzure.Commands.CloudService.TestAzureNameCommand
Does anyone know how to get around this? Google was absolutely no help, at least as far as Test-AzureName with this particular error message. I thought of trying one of the -Service/ServiceBusName/Storage/Website arguments, but I'm not sure which is even applicable here. Or if it's even relevant -- the error message doesn't appear to indicate that I'm actually missing a parameter, just that the one I provided is somehow bad.
Oh, and if it helps, here's the call to Check-For-Server:
$sqlServerName = "test_db_server"
Check-For-Server -ServerName $sqlServerName
Thanks!

Answer 1

$serverInstance = Get-AzureRmSqlServer -ServerName $serverName -ResourceGroupName $resourceGroupname -ErrorAction SilentlyContinue
if ($serverInstance) { do stuff }
else { do other stuff }