Create a new SQL logical server with Azure AD-only authentication and an Azure AD Administrator.
{"type": "microsoft.sql/servers", "apiversion": "2020-11-01-preview", "name": "[parameters('server')]", "location": "[parameters('location')]", "properties": {"administrators": {"login": "[parameters('aad_admin_name')]", "sid": "[parameters('aad_admin_objectid')]", "tenantid": "[parameters('aad_admin_tenantid')]", "principaltype": "[parameters('aad_admin_type')]", "azureadonlyauthentication": "[parameters('aad_only_auth')]"}}} 