When you set up your data source you can set the identifier

Question

When you set up your data source you can set the identifier join <https docs growthbook io app datasources identifier join tables|https docs growthbook io app datasources identifier join tables>

damp-printer-48360 · Answer

So in this case we would only use the `deviceId` then That s a bit weird if a known user logs in from a different device i e different `deviceId` they could see a different variation despite having the same `user id`

damp-printer-48360 · Answer

My idea was to create 2 experiments the first one using the user ID `guid` the second one using the `deviceId` if the `guid` is not provided

damp-printer-48360 · Answer

Something like this

fresh-football-47124 · Answer

that will cause re radomization

fresh-football-47124 · Answer

typically the anon id or device id is the same for that user across the login event where they get the user id

fresh-football-47124 · Answer

so if you want all users use the device id