PostGIS Terminal Examples

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Here are some examples queries for the PostGIS Terminal.

Simple SQL Queries

Alle Zoos der Schweiz (Tipp: http://labs.geometa.info/postgisterminal/?xapi=*[tourism=zoo]): 

  SELECT ST_AsText(way) AS geom, name||' '||osm_id AS label
  FROM osm_all
  WHERE tags @> hstore('tourism','zoo')

Schweizer Kernkraftwerke mit 40 Km-Puffer: 

  SELECT
   ST_AsText(ST_Buffer(ST_Centroid(way),40000)) AS geom,
   name AS label
  FROM osm_all
  WHERE tags @> hstore('generator:source','nuclear')

Alle Restaurants mit Namen 'Rössli' der Schweiz: 

  SELECT ST_AsText(way) AS geom, name AS label
  FROM osm_point
  WHERE amenity = 'restaurant'
  AND name ILIKE '%rössli%'

Suche nach Namen, die "Hochschule" und "Rapperswil" (und was auch immer für Zeichen dazwischen sind): 

  SELECT ST_AsText(way) geom,
  COALESCE(name, '')||' '||osm_id AS label
  FROM osm_all
  WHERE hstore("tags")->'name' LIKE 'Hochschule%Rapperswil'

Alle 4000er Berggipfel der Schweiz: 

  SELECT ST_AsText(way) AS geom, name||','||ele AS label
  FROM osm_point
  WHERE "natural" = 'peak'
  AND  to_number('0'||ele, '99999999999.000')::int >= 4000
  
  oder:
  
  SELECT ST_AsText(way) AS geom, COALESCE(name, '')||' '||osm_id AS label
  FROM osm_poi
  WHERE tags @> hstore('natural', 'peak')
  AND CAST(regexp_replace(hstore("tags")->'ele', '[^0-9\.]', '', 'g') AS real) >= 4000

Alle Aussichtspunkte im Kanton Zürich, die höher als 500 m ü.M. sind: 

  SELECT ST_AsText(a.way) geom, COALESCE(name, '')||' '||ele||' m ü.M' AS label
  FROM 
    osm_point AS a, 
    (SELECT way FROM osm_polygon 
     WHERE name = 'Zürich'
     AND tags @> hstore('admin_level','4')) AS b
  WHERE ST_Contains(b.way,a.way)
  AND tags @> hstore('tourism','viewpoint')
  AND  to_number('0'||ele, '99999999999.000')::int >= 500

Alle Picnic-Plätze und Aussichtspunkte im aktuellen Kartenausschnitt: 

  SELECT ST_AsText(way) AS geom, name AS label
  FROM osm_point
  WHERE tourism IN ('picnic_site','viewpoint')
  AND ST_Contains(mapextent(), way)

Alle Schulhäuser im Umkreis von 40 km aller Kernkraftwerke: 

  SELECT ST_AsText(a.way) AS geom, '' AS label
  FROM 
    osm_poi AS a, 
    (SELECT ST_Buffer(ST_Centroid(way),40000) AS way
     FROM osm_poi
     WHERE tags @> hstore('generator:source','nuclear')) AS b
  WHERE ST_Within(a.way,b.way)
    AND a.tags @> hstore('amenity', 'school')
  UNION
  SELECT ST_AsText(ST_Buffer(ST_Centroid(way),40000)) AS geom, COALESCE(name, '') AS label
  FROM osm_poi
  WHERE tags @> hstore('generator:source','nuclear')

Die nächsten 10 Bars in der Nähe von 'mylocation' (ungeachtet der Distanz): 

  SELECT ST_AsText(osm_poi.way) AS geom, COALESCE(name, '') AS label
  FROM 
    osm_poi, 
    (SELECT ST_Transform(ST_GeomFromText('POINT(8.81638 47.22666)', 4326), 900913) AS way) AS mylocation
  WHERE osm_poi.tags @> hstore('amenity', 'bar')
  ORDER BY osm_poi.way <-> mylocation.way
  LIMIT 10

Die nächsten 100 Restaurants in der Nähe von 'mylocation' im Umkreis von max. 20 Km (Luftlinie): 

  SELECT ST_AsText(osm_poi.way) AS geom, COALESCE(name, '') AS label
  FROM 
    osm_poi, 
    (SELECT ST_Transform(ST_GeomFromText('POINT(8.81638 47.22666)', 4326), 900913) AS way) AS mylocation
  WHERE ST_DWithin(osm_poi.way, mylocation.way, 20000)
  AND osm_poi.tags @> hstore('amenity', 'restaurant')
  ORDER BY osm_poi.way <-> mylocation.way
  LIMIT 100

Alle Strassen mit Namen "Bahnhofstrasse" im Kt.ZH: 

 
  SELECT ST_AsText(ST_LineMerge(w.way))
  FROM osm_line w, 
       (SELECT way FROM osm_polygon 
        WHERE name = 'Zürich'
        AND tags @> hstore('admin_level','4')) AS p
  WHERE w.name = 'Bahnhofstrasse'
  AND (hstore("tags")->'highway') IS NOT NULL
  AND ST_Within(w.way, p.way)

Complex SQL Queries

Select names of all OSM-objects containing 'zoo' at start middle or end (using wildcard '%' in String): 

 SELECT ST_AsText(way) geom,
 COALESCE(name, ' ')||' '||osm_id label
 FROM osm_all
 WHERE hstore(tags)->'name' ILIKE '%zoo%'

Select all parking lots for disabled persons (Rollstuhlparkplatz / wheel parking) within visible map area (without FIXME). Note: Tag capacity:disabled currently occurs always together with amenity={parking, parking_space, parking_entrance}): 

 SELECT ST_AsText(way) geom, 
        COALESCE(name,' ')||' ('||COALESCE(SUBSTRING((tags->'capacity:disabled') FROM E'[0-9]+'),' ')||')' label
 FROM osm_poi
 WHERE (tags @> '"capacity:disabled"=>"yes"' 
        OR SUBSTRING((tags->'capacity:disabled') FROM E'[0-9]+')::int > 0)
 AND ST_Contains(mapextent(), way)

Select all motorways (higways) with speed limit greater or equal than 100: 

 SELECT ST_AsText(way) geom
 FROM osm_line
 WHERE tags @> '"highway"=>"motorway"'
 AND COALESCE(SUBSTRING((tags->'maxspeed') FROM E'[0-9]+')::int,0) >= 100
 -- 1806!

Count tags except xxx...: 

 SELECT array_upper(%# tags, 1) AS "#tags", count(*) AS "count"
 FROM osm_point
 WHERE array_upper(%# tags, 1) > 0
 AND NOT EXISTS (SELECT skeys FROM skeys(tags) WHERE skeys LIKE 'xxx:%')
 GROUP BY 1
 ORDER BY 1

Marker Queries

 --- marker query (must have exactly field names lon, lat, title and description):
 SELECT X(p2.way) AS lon, Y(p2.way) AS lat, 'Briefkasten' AS title, p2.ref AS description
 FROM planet_osm_polygon p1
 JOIN planet_osm_point p2 ON CONTAINS(p1.way, p2.way)
 WHERE p1.name = 'Uster'
 AND p2.amenity = 'post_box'

 --- Extension with user defined marker icon (attribute 'icon'):
 SELECT X(p2.way) AS lon, Y(p2.way) AS lat, 'Briefkasten' AS title, p2.ref AS description, 'http://myserver/marker.png' as icon 
 FROM planet_osm_polygon p1
 JOIN planet_osm_point p2 ON CONTAINS(p1.way, p2.way)
 WHERE p1.name = 'Uster'
 AND p2.amenity = 'post_box'

Statistics

All tupels in all tables

 SELECT '1. '||to_char(count(*), '999G999G999')||' osm_point(s)'
 FROM osm_point
 UNION
 SELECT '2. '||to_char(count(*), '999G999G999')||' osm_poi(s)'
 FROM osm_poi
 UNION
 SELECT '3. '||to_char(count(*), '999G999G999')||' osm_line(s)'
 FROM osm_line
 UNION
 SELECT '4. '||to_char(count(*), '999G999G999')||' osm_polygon(s)'
 FROM osm_polygon
 UNION
 SELECT '5. '||to_char(count(*), '999G999G999')||' osm_nodes'
 FROM osm_nodes
 UNION
 SELECT '6. '||to_char(count(*), '999G999G999')||' osm_ways'
 FROM osm_ways
 UNION
 SELECT '7. '||to_char(count(*), '999G999G999')||' osm_rels'
 FROM osm_rels
 ORDER BY 1

All Tag-Value-Pairs of OSM data

Kann anstelle mit osm_point auch mit osm_all durchgeführt werden. 

 --
 -- Key-Value Statistics of OSM Data
 -- Return all key-value-pairs of type 'enum' without some 
 -- types numeric, date/time etc. chosen by hand:
 -- 
 -- Alternative with separate tag-value: 
 -- SELECT tmp.key as tag, tmp.value as value, count(*)::integer as freq
 SELECT tmp.key||'='||tmp.value as kvp, count(*)::integer as freq 
 FROM (
   SELECT (each(tags)).key as key, (each(tags)).value as value 
   FROM osm_point) as tmp
 WHERE (trim(value) !~ '^[-]*[0-9,.:\ ]+[m]*$')
 AND NOT (value ILIKE '%fixme%' OR key ILIKE '%fixme%')
 AND key NOT LIKE '%:%'
 AND key NOT LIKE '%description%'
 AND key NOT LIKE '%comment%'
 AND key NOT LIKE '%name'
 AND key NOT LIKE 'uic_%'
 AND key NOT LIKE '%ref'
 AND key NOT ILIKE '%fixme%'
 AND key NOT ILIKE '%todo%'
 AND key NOT IN ('name','operator','_picture_','_waypoint_','address','alt','is_in','url','website','wikipedia','email',
                 'converted_by','phone','information','opening_hours','date','time','collection_times','colour','fee',
                 'population','access','noexit','towards','bus_routes','busline','lines','type','denotation',
                 'CONTINUE','continue','copyright','stop')
 GROUP BY tmp.key, tmp.value
 -- HAVING COUNT(*) > 1
 ORDER by key, freq DESC
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