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further split up the big geometry index

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Adds partial indexes for all geometry queries used during import.
A full index is not necessary anymore at that point. Still create
the index afterwards for use in queries.

Also adds documentation for all indexes on where they are used.
This commit is contained in:
Sarah Hoffmann
2022-09-21 14:25:07 +02:00
parent f4d3ae6f70
commit 33ba6896a8
4 changed files with 60 additions and 20 deletions
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47
lib-sql/tables.sql
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@@ -137,7 +137,9 @@ CREATE TABLE place_addressline (
) {{db.tablespace.search_data}};
CREATE INDEX idx_place_addressline_place_id on place_addressline USING BTREE (place_id) {{db.tablespace.search_index}};
drop table if exists placex;
--------- PLACEX - storage for all indexed places -----------------
DROP TABLE IF EXISTS placex;
CREATE TABLE placex (
place_id BIGINT NOT NULL,
parent_place_id BIGINT,
@@ -157,25 +159,54 @@ CREATE TABLE placex (
postcode TEXT,
centroid GEOMETRY(Geometry, 4326)
) {{db.tablespace.search_data}};
CREATE UNIQUE INDEX idx_place_id ON placex USING BTREE (place_id) {{db.tablespace.search_index}};
CREATE INDEX idx_placex_node_osmid ON placex USING BTREE (osm_id) {{db.tablespace.search_index}} WHERE osm_type = 'N';
CREATE INDEX idx_placex_way_osmid ON placex USING BTREE (osm_id) {{db.tablespace.search_index}} WHERE osm_type = 'W';
CREATE INDEX idx_placex_relation_osmid ON placex USING BTREE (osm_id) {{db.tablespace.search_index}} WHERE osm_type = 'R';
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_geometry ON placex USING GIST (geometry) {{db.tablespace.search_index}};
{% 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 {{postgres.spgist_geom}} (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
-- - lookupPolygon()
CREATE INDEX idx_placex_geometry_placenode ON placex
USING {{postgres.spgist_geom}} (geometry) {{db.tablespace.address_index}}
WHERE osm_type = 'N' and rank_search < 26
and class = 'place' and type != 'postcode' and linked_place_id is null;
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;
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 {{postgres.spgist_geom}} (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.