FQL getting a list of non-friend from my current location

FQL getting a list of non-friend from my current location

I would like to know how to get a list of id facebook's user from my
current location,
I just did that "SELECT uid , current_location FROM user WHERE
current_location = '115175415163151'"
but I get the next error
"{ "error": { "message": "Your statement is not indexable. The WHERE
clause must contain an indexable column. Such columns are marked with * in
the tables linked from http://developers.facebook.com/docs/reference/fql
", "type": "NoIndexFunctionException", "code": 604 } }"