Feel free to check it on my latest project: http://arda-maps.org:2480 arda arda as login.
Now check select distinct(type) from Location
Here you get 8 records (River,Lake,Region,City,Island,House,Mountain,Hill). But actually there are way more...
To show you that the distinct somehow is not giving back all distinct we search for one specific vertex with another type:
So am I using distinct in a wrong way. Or what could be the reason for the incomplete result list?