Grouped nodes in OpenStreetMap with Overpass API - openstreetmap

Question

Hy.I would like to query nodes gruped by some area. For example: how to get all nodes (e.g. peaks) for given area (eg. administrative boundary - country).
Something like join in SQL:
SELECT n.*, a.name from node n LEFT JOIN area a ON n.area_id = a.id WHERE n.type = "peak"
Resoult would be something like:
{ features: [
{
type: "node:",
area: "slovenia"
properties: {....},
geometry: {...}
},
...
]}
or maybe:
{ areas: [
slovenia: {
nodes: [
{
type: "node:",
area: "slovenia"
properties: {...},
geometry: {...}
},
...
]
},
...
]}
Is this even possible? Or should I first make 1 query for all areas and then for each area make another query?

Answer 1

Area in area support is not yet officially available (see this Github pull request for some ideas how this might look like in the future), but you could use the approach described on the following help page:
https://help.openstreetmap.org/questions/35976/add-reverse-geocoding-information-to-the-overpass-resulting-set
In particular I'd recommend to take a look at the following query: http://overpass-turbo.eu/s/4FJ
It works with a single query but mixes sign posts with all areas this sign post is included.You should be able to easily adjust this to your tags / area. Note that a bit of post processing on the result may be required.
Probably the closest thing you're looking for is also described in the Github pull request. This would print the area followed by all nodes in that area. But as I mentioned, this will only be available at some point in the future.
Sample output:
#oname #id name
area 3600062387 Landkreis Merzig-Wadern
node 313138635
node 313150002
node 313460474
node 315050154
node 431311279
...