Google App Engine地理查询

Question

query = db.GqlQuery("SELECT * FROM Place 
                      WHERE location >= :1 AND 
                            location <= :2",
                    db.GeoPt(lat=minLat, lon=minLon), 
                    db.GeoPt(lat=maxLat, lon=maxLon) )

From what I understand, GAE ignore the long in this case. Is this true?

Answer 1

Short answer: Yes.

Long answer: GeoPt properties are sorted first by latitude, then by longitude. This query will find entities that fall between the two latitudes, only considering the longitudes if the latitudes are identical.