[Developers] Freebase users on Google Maps: Better MQL?

[Kurt Bollacker]

On Fri, May 11, 2007 at 04:33:33PM +0200, Will Moffat wrote:
> Next question: Is there a way to match an empty field?
> 
> I can match user profiles with a geolocation with the query below. But
> how could I match users _without_ a geolocation? I could query all
> users and post-process but it seems like it would be more efficient if
> there was a MQL construct like "geolocation":undefined

You are asking for a general NOT operator, which MQL currently does
not have.  This is not to say we won't add such a feature at some
point in the future. However, for now your best bet is to filter as
you suggest.

								Kurt :-)
 
> thanks for your help,
> --Will
> 
> Query to show users '*fi*' and their geolocation:
> [{
>  "id":null,
>  "limit":10,
>  "location":[{
>    "geolocation":{
>      "latitude":null,
>      "longitude":null
>    },
>    "name":null
>  }],
>  "name":null,
>  "name~=":"*fi*",
>  "type":"/freebase/user_profile"
> }]