I needed a Workflow Manager Installation for my SharePoint 2016 farm and I used the Web Installer to do all the Installation work for me following this guide:
When the Installation finished I configured the Installation Manager with the wizard and got the following error message during the configuration:
System.Management.Automation.CmdletInvocationException: An object or column name is missing or empty. For SELECT INTO statements, verify each column has a name. For other statements, look for empty alias names. Aliases defined as "" or  are not allowed. Change the alias to a valid name.
The reason for this error in my case was the language of the SQL Server. Mine is installed in German and that means there is no Group called BUILTIN\Administrators. Instead I have a group called VORDEFINIERT\Administratoren. So I changed the values in the wizard for the admin groups to their german name but still no luck: The wizard only accepts BUILTIN\Administrators and not VORDEFINIERT\Administratoren. So I changed my admin Groups to domain Groups like CONTOSO\Domänen-Admins and that worked and I was able to accomplish the Installation.