Anybody have any ideas? Bumping...
I'm sorry, I don't have any ideas but I'm interested in understanding this. Have you tried talking with Tableau tech support?
No, not yet. What's more, today the column just showed up in the extract data source...strange! The only thing I recall doing was that I had to disconnect the extract (uncheck Use Extract) to do something and when I reconnected it I noticed that the column magically appeared. Maybe that's the trick? I can't be certain of the above course of events but it's my best guess.
Anybody else experience this? Seems as though as soon as an extract's refreshed, it should auto detect that a new column has been added or dropped from the underlying DB source. Rather it seems as though Tableau simply updates the existing columns with your latest data. A great enhancement idea!
I had similar issues. On my smaller extract my new dimensions showed up just fine. On my larger one (1.4MM rows) I tried many different things, and I don't know what worked. I suspsect the activity that allowed the dimensions to appear was shutting tableau down and reopening it. If there is any clarity on this please post.