[OSM-talk] Activity statistics per city (or region)

[Paul Norman]

On 10/26/2015 8:24 AM, Fabian Schmidt wrote:
> It is rare but there are users who renamed their account, so there are 
> more user names than numeric user ids. 

No. Although users have renamed their account, this doesn't increase the 
number of user names, it changes one of them.

Additionally, user IDs are a PostgreSQL serial so there can be gaps, and 
spam users are sometimes completely deleted.