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speed up reverse lookup of place nodes

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Add a special index that contains the place nodes buffered by their
respective area according to their search rank. This replaces the
maximum area search for place nodes and reduces drastically the number
of place nodes that need to be retrieved.
This commit is contained in:
Sarah Hoffmann
2023-02-17 10:31:49 +01:00
parent 3405dbf90e
commit 8ed096f938
5 changed files with 29 additions and 14 deletions
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7
lib-sql/indices.sql
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@@ -30,6 +30,13 @@ CREATE INDEX IF NOT EXISTS idx_placex_geometry_reverse_lookupPolygon
AND rank_address between 4 and 25 AND type != 'postcode'
AND name is not null AND indexed_status = 0 AND linked_place_id is null;
---
-- used in reverse large area lookup
CREATE INDEX IF NOT EXISTS idx_placex_geometry_reverse_lookupPlaceNode
ON placex USING gist (ST_Buffer(geometry, reverse_place_diameter(rank_search)))
{{db.tablespace.search_index}}
WHERE rank_address between 4 and 25 AND type != 'postcode'
AND name is not null AND linked_place_id is null AND osm_type = 'N';
---
CREATE INDEX IF NOT EXISTS idx_osmline_parent_place_id
ON location_property_osmline USING BTREE (parent_place_id) {{db.tablespace.search_index}}
WHERE parent_place_id is not null;