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look for postcode areas when finding something in the postcode table

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Sarah Hoffmann
2024-03-11 14:48:24 +01:00
parent e5a5f02666
commit dc7cfd1708
5 changed files with 47 additions and 2 deletions
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10
nominatim/tools/migration.py
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@@ -382,3 +382,13 @@ def add_improved_geometry_reverse_placenode_index(conn: Connection, **_: Any) ->
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'
""")
@_migration(4, 4, 99, 0)
def create_postcode_ara_lookup_index(conn: Connection, **_: Any) -> None:
""" Create index needed for looking up postcode areas from postocde points.
"""
with conn.cursor() as cur:
cur.execute("""CREATE INDEX IF NOT EXISTS idx_placex_postcode_areas
ON placex USING BTREE (country_code, postcode)
WHERE osm_type = 'R' AND class = 'boundary' AND type = 'postal_code'
""")