-CREATE INDEX idx_placex_osmid ON placex USING BTREE (osm_type, osm_id) {{db.tablespace.search_index}};
-CREATE INDEX idx_placex_linked_place_id ON placex USING BTREE (linked_place_id) {{db.tablespace.address_index}} WHERE linked_place_id IS NOT NULL;
-CREATE INDEX idx_placex_rank_search ON placex USING BTREE (rank_search, geometry_sector) {{db.tablespace.address_index}};
-CREATE INDEX idx_placex_geometry ON placex USING GIST (geometry) {{db.tablespace.search_index}};
-CREATE INDEX idx_placex_adminname on placex USING BTREE (make_standard_name(name->'name')) {{db.tablespace.address_index}} WHERE osm_type='N' and rank_search < 26;
-CREATE INDEX idx_placex_wikidata on placex USING BTREE ((extratags -> 'wikidata')) {{db.tablespace.address_index}} WHERE extratags ? 'wikidata' and class = 'place' and osm_type = 'N' and rank_search < 26;
+{% for osm_type in ('N', 'W', 'R') %}
+CREATE INDEX idx_placex_osmid_{{osm_type | lower}} ON placex
+ USING BTREE (osm_id) {{db.tablespace.search_index}}
+ WHERE osm_type = '{{osm_type}}';
+{% endfor %}
+
+-- Usage: - removing linkage status on update
+-- - lookup linked places for /details
+CREATE INDEX idx_placex_linked_place_id ON placex
+ USING BTREE (linked_place_id) {{db.tablespace.address_index}}
+ WHERE linked_place_id IS NOT NULL;
+
+-- Usage: - check that admin boundaries do not overtake each other rank-wise
+-- - check that place node in a admin boundary with the same address level
+-- - boundary is not completely contained in a place area
+-- - parenting of large-area or unparentable features
+CREATE INDEX idx_placex_geometry_address_area_candidates ON placex
+ USING gist (geometry) {{db.tablespace.address_index}}
+ WHERE rank_address between 1 and 25
+ and ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon');
+
+-- Usage: - POI is within building with housenumber
+CREATE INDEX idx_placex_geometry_buildings ON placex
+ USING SPGIST (geometry) {{db.tablespace.address_index}}
+ WHERE address is not null and rank_search = 30
+ and ST_GeometryType(geometry) in ('ST_Polygon','ST_MultiPolygon');
+
+-- Usage: - linking of similar named places to boundaries
+-- - linking of place nodes with same type to boundaries
+CREATE INDEX idx_placex_geometry_placenode ON placex
+ USING SPGIST (geometry) {{db.tablespace.address_index}}
+ WHERE osm_type = 'N' and rank_search < 26
+ and class = 'place' and type != 'postcode';
+
+-- Usage: - is node part of a way?
+-- - find parent of interpolation spatially
+CREATE INDEX idx_placex_geometry_lower_rank_ways ON placex
+ USING SPGIST (geometry) {{db.tablespace.address_index}}
+ WHERE osm_type = 'W' and rank_search >= 26;
+
+-- Usage: - linking place nodes by wikidata tag to boundaries
+CREATE INDEX idx_placex_wikidata on placex
+ USING BTREE ((extratags -> 'wikidata')) {{db.tablespace.address_index}}
+ WHERE extratags ? 'wikidata' and class = 'place'
+ and osm_type = 'N' and rank_search < 26;
+
+-- The following two indexes function as a todo list for indexing.
+
+CREATE INDEX idx_placex_rank_address_sector ON placex
+ USING BTREE (rank_address, geometry_sector) {{db.tablespace.address_index}}
+ WHERE indexed_status > 0;
+
+CREATE INDEX idx_placex_rank_boundaries_sector ON placex
+ USING BTREE (rank_search, geometry_sector) {{db.tablespace.address_index}}
+ WHERE class = 'boundary' and type = 'administrative'
+ and indexed_status > 0;
+