Use a function like this one:
select station_id, station_name, distance(stations_2.geom,(select geom
from stations_1 where station_id = 34)) as dist from stations_2 where
station_id <> 34 order by dist asc
hope this one speaks for itself, it returns a table ordered by distance,
from the nearest to the furthest, process the result in a view or something.
Good luck!
bdbeames schreef:
> I'm completely new to this so I need some help writing a query.
>
> What I have is two tables with weather station information: id, name,
> latitude, longitude, extra.
>
> I am using google map where a user can click on a station from one of the
> tables, I obtain the $latitude and $longitude points of that location. I
> now want to use these to find the nearest weather station in my other table
> based on the $latitude and $longitude point.
>
> All that I need back from the query is the id and name of the nearest
> station. Could someone help me write a simple query to do this.
>
> My development environment is Linux/Apache/Postgres/php.
>
> Thanks.
>
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