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further tweaking of address distance

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For point features, keep using the distance to centroid.
For area features, add a tie breaker for the case where the
center point falls on the boundary.
This commit is contained in:
Sarah Hoffmann
2022-04-22 14:32:19 +02:00
parent 784dad866f
commit a515761193
1 changed files with 5 additions and 1 deletions
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6
lib-sql/functions/partition-functions.sql
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@@ -51,7 +51,11 @@ BEGIN
IF in_partition = {{ partition }} THEN IF in_partition = {{ partition }} THEN
FOR r IN FOR r IN
SELECT place_id, keywords, rank_address, rank_search, SELECT place_id, keywords, rank_address, rank_search,
min(ST_Distance(feature_centroid, geometry)) as distance, CASE WHEN isguess THEN ST_Distance(feature, centroid)
ELSE min(ST_Distance(feature_centroid, geometry))
-- tie breaker when distance is the same (i.e. way is on boundary)
+ 0.00001 * ST_Distance(feature, centroid)
END as distance,
isguess, postcode, centroid isguess, postcode, centroid
FROM location_area_large_{{ partition }} FROM location_area_large_{{ partition }}
WHERE geometry && feature WHERE geometry && feature