kopia lustrzana https://github.com/openmaptiles/openmaptiles
Convert semi-colon separated house numbers to a range (#1562)
This PR collapses housenumber values into the form min(housenumber)-max(housenumber) for cases where housenumber is a semi-colon separated list. If the list is all numbers, the bounds are the smallest and largest numbers. If the list includes non-numeric characters, it falls back to the first and last values in the list.pull/1579/head^2
rodzic
48a2b1af72
commit
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@ -14,7 +14,7 @@ SELECT
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-- etldoc: osm_housenumber_point -> layer_housenumber:z14_
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osm_id,
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geometry,
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housenumber
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display_housenumber(housenumber)
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FROM (
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SELECT
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osm_id,
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@ -7,12 +7,14 @@ layer:
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buffer_size: 8
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srs: +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over
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fields:
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housenumber: Value of the [`addr:housenumber`](http://wiki.openstreetmap.org/wiki/Key:addr) tag.
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housenumber: Value of the [`addr:housenumber`](http://wiki.openstreetmap.org/wiki/Key:addr) tag.
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If there are multiple values separated by semi-colons, the first and last value separated by a dash.
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datasource:
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geometry_field: geometry
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srid: 900913
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query: (SELECT geometry, housenumber FROM layer_housenumber(!bbox!, z(!scale_denominator!))) AS t
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schema:
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- ./housenumber_display.sql
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- ./housenumber_centroid.sql
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- ./housenumber.sql
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datasources:
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@ -0,0 +1,20 @@
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CREATE OR REPLACE FUNCTION display_housenumber_nonnumeric(raw_housenumber text)
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RETURNS text AS $$
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-- Find the position of the semicolon in the input string
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-- and extract the first and last value
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SELECT substring(raw_housenumber from 1 for position(';' in raw_housenumber) - 1)
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|| '–'
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|| substring(raw_housenumber from position(';' in raw_housenumber) + 1);
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$$ LANGUAGE SQL IMMUTABLE;
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CREATE OR REPLACE FUNCTION display_housenumber(raw_housenumber text)
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RETURNS text AS $$
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SELECT CASE
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WHEN raw_housenumber !~ ';' THEN raw_housenumber
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WHEN raw_housenumber ~ '[^0-9;]' THEN display_housenumber_nonnumeric(raw_housenumber)
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ELSE
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(SELECT min(value)::text || '–' || max(value)::text
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FROM unnest(string_to_array(raw_housenumber, ';')::int[]) AS value)
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END
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$$ LANGUAGE SQL IMMUTABLE;
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