I have several hosted feature layers that I publish as a service. I want to join an external table to each of these feature layers which has a field with a url I want users to be able to view. I joined the table to each of the layers but after I published and viewed the layers in AGOL, the table was not attached. Does AGOL support joins? Is there another way to attach this table to each of the hosted feature layers to be visible in the Collector app that we are using these layers for? I converted the Excel table to a geodatabase table before the join process.