I'm trying to create a report from my Google Analytics data, which maps user-ids with the source / medium / campaign.
So think something like the table you find in the User Explorer, except with the columns : user-id | source | medium | campaign.
This doesn't seem to be obviously available and I couldn't find anything useful via google search. What I've found deals with the user-id or the campaign, never both together :/
Ideally the resulting table would be exportable. Would appreciate the help!