$AzureSQLServerName = "xxxx" 
$AzureSQLDatabaseName = "yyyy" 
$SQLOutput = ""

try {
    $AzureSQLServerName = $AzureSQLServerName + ".database.windows.net" 

    Disable-AzContextAutosave -Scope Process
    $AzureContext = (Connect-AzAccount -Identity).context

    $token = (Get-AzAccessToken -ResourceUrl https://database.windows.net).Token

    $SQLOutput = $(Invoke-Sqlcmd -ServerInstance $AzureSQLServerName `
                                 -Database $AzureSQLDatabaseName  `
                                 -AccessToken "$token" `
                                 -Query "exec [dbo].[AzureSQLMaintenance] @Operation='all' ,@LogToTable=1" -QueryTimeout 65535 -ConnectionTimeout 60 -Verbose) 4>&1 
}
catch 
{
   Write-Host $_
   throw "Error occured!"
}
finally {
   Write-Output $SQLOutput​
}