X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/052d219205cef43624a484e6c0a4cfbbc231433f..6704f7bbb08127cdf2cb7e1e1fc28605b2273bfa:/sql/functions.sql diff --git a/sql/functions.sql b/sql/functions.sql index 82023671..9186c6a3 100644 --- a/sql/functions.sql +++ b/sql/functions.sql @@ -548,21 +548,6 @@ BEGIN RETURN nearcountry.country_code; END LOOP; - -- WorldBoundaries data (second fallback - think there might be something broken in this data) --- FOR nearcountry IN select country_code from country where st_covers(geometry, place_centre) limit 1 --- LOOP --- RETURN nearcountry.country_code; --- END LOOP; - ---RAISE WARNING 'near country: %', ST_AsText(place_centre); - - -- Still not in a country - try nearest within ~12 miles of a country --- FOR nearcountry IN select country_code from country where st_distance(geometry, place_centre) < 0.5 --- order by st_distance(geometry, place) limit 1 --- LOOP --- RETURN nearcountry.country_code; --- END LOOP; - RETURN NULL; END; $$ @@ -791,7 +776,7 @@ LANGUAGE plpgsql; CREATE OR REPLACE FUNCTION create_interpolation(wayid BIGINT, interpolationtype TEXT) RETURNS INTEGER AS $$ DECLARE - + newpoints INTEGER; waynodes BIGINT[]; nodeid BIGINT; @@ -804,117 +789,107 @@ DECLARE originalnumberrange INTEGER; housenum INTEGER; linegeo GEOMETRY; + splitline GEOMETRY; + sectiongeo GEOMETRY; search_place_id BIGINT; defpostalcode TEXT; - havefirstpoint BOOLEAN; - linestr TEXT; BEGIN - newpoints := 0; - IF interpolationtype = 'odd' OR interpolationtype = 'even' OR interpolationtype = 'all' THEN - - select postcode from placex where osm_type = 'W' and osm_id = wayid INTO defpostalcode; - select nodes from planet_osm_ways where id = wayid INTO waynodes; ---RAISE WARNING 'interpolation % % %',wayid,interpolationtype,waynodes; - IF array_upper(waynodes, 1) IS NOT NULL THEN - - havefirstpoint := false; - - FOR nodeidpos in 1..array_upper(waynodes, 1) LOOP - - -- If there is a place of a type other than place/house, use that because - -- it is guaranteed to be the original node. For place/house types use the - -- one with the smallest id because the original node was created first. - -- Ignore all nodes marked for deletion. (Might happen when the type changes.) - select place_id from placex where osm_type = 'N' and osm_id = waynodes[nodeidpos]::BIGINT and indexed_status < 100 order by (type = 'house'),place_id limit 1 INTO search_place_id; - IF search_place_id IS NULL THEN - -- if no such node exists, create a record of the right type - select * from placex where osm_type = 'N' and osm_id = waynodes[nodeidpos]::BIGINT and type = 'house' limit 1 INTO nextnode; - select ST_SetSRID(ST_Point(lon::float/10000000,lat::float/10000000),4326) from planet_osm_nodes where id = waynodes[nodeidpos] INTO nextnode.geometry; - IF nextnode.geometry IS NULL THEN - -- we don't have any information about this point, most likely - -- because an excerpt was updated and the node never imported - -- because the interpolation is outside the region of the excerpt. - -- Give up. - RETURN newpoints; - END IF; - ELSE - select * from placex where place_id = search_place_id INTO nextnode; - END IF; + IF interpolationtype = 'odd' OR interpolationtype = 'even' THEN + stepsize := 2; + ELSEIF interpolationtype = 'all' THEN + stepsize := 1; + ELSEIF interpolationtype ~ '^\d+$' THEN + stepsize := interpolationtype::INTEGER; + ELSE + RETURN 0; + END IF; ---RAISE WARNING 'interpolation node % % % ',nextnode.housenumber,ST_X(nextnode.geometry),ST_Y(nextnode.geometry); - - IF havefirstpoint THEN + select nodes from planet_osm_ways where id = wayid INTO waynodes; - -- add point to the line string - linestr := linestr||','||ST_X(nextnode.geometry)||' '||ST_Y(nextnode.geometry); - endnumber := ('0'||substring(nextnode.housenumber,'[0-9]+'))::integer; + IF array_upper(waynodes, 1) IS NULL THEN + RETURN 0; + END IF; - IF startnumber IS NOT NULL and startnumber > 0 AND endnumber IS NOT NULL and endnumber > 0 AND @(startnumber - endnumber) < 1000 THEN + select postcode, geometry from placex where osm_type = 'W' and osm_id = wayid + INTO defpostalcode, linegeo; ---RAISE WARNING 'interpolation end % % ',nextnode.place_id,endnumber; + IF ST_GeometryType(linegeo) != 'ST_LineString' THEN + RETURN 0; + END IF; - IF startnumber != endnumber THEN + startnumber := NULL; + newpoints := 0; - linestr := linestr || ')'; ---RAISE WARNING 'linestr %',linestr; - linegeo := ST_GeomFromText(linestr,4326); - linestr := 'LINESTRING('||ST_X(nextnode.geometry)||' '||ST_Y(nextnode.geometry); - IF (startnumber > endnumber) THEN - housenum := endnumber; - endnumber := startnumber; - startnumber := housenum; - linegeo := ST_Reverse(linegeo); - END IF; - orginalstartnumber := startnumber; - originalnumberrange := endnumber - startnumber; - --- Too much broken data worldwide for this test to be worth using --- IF originalnumberrange > 500 THEN --- RAISE WARNING 'Number block of % while processing % %', originalnumberrange, prevnode, nextnode; --- END IF; - - IF (interpolationtype = 'odd' AND startnumber%2 = 0) OR (interpolationtype = 'even' AND startnumber%2 = 1) THEN - startnumber := startnumber + 1; - stepsize := 2; - ELSE - IF (interpolationtype = 'odd' OR interpolationtype = 'even') THEN - startnumber := startnumber + 2; - stepsize := 2; - ELSE -- everything else assumed to be 'all' - startnumber := startnumber + 1; - stepsize := 1; - END IF; - END IF; - endnumber := endnumber - 1; - delete from placex where osm_type = 'N' and osm_id = prevnode.osm_id and type = 'house' and place_id != prevnode.place_id; - FOR housenum IN startnumber..endnumber BY stepsize LOOP - -- this should really copy postcodes but it puts a huge burdon on the system for no big benefit - -- ideally postcodes should move up to the way - insert into placex (osm_type, osm_id, class, type, admin_level, housenumber, street, addr_place, isin, postcode, - country_code, parent_place_id, rank_address, rank_search, indexed_status, geometry) - values ('N',prevnode.osm_id, 'place', 'house', prevnode.admin_level, housenum, prevnode.street, prevnode.addr_place, prevnode.isin, coalesce(prevnode.postcode, defpostalcode), - prevnode.country_code, prevnode.parent_place_id, prevnode.rank_address, prevnode.rank_search, 1, ST_LineInterpolatePoint(linegeo, (housenum::float-orginalstartnumber::float)/originalnumberrange::float)); - newpoints := newpoints + 1; ---RAISE WARNING 'interpolation number % % ',prevnode.place_id,housenum; - END LOOP; - END IF; - havefirstpoint := false; - END IF; + FOR nodeidpos in 1..array_upper(waynodes, 1) LOOP + + -- If there is a place of a type other than place/house, use that because + -- it is guaranteed to be the original node. For place/house types use the + -- one with the smallest id because the original node was created first. + -- Ignore all nodes marked for deletion. (Might happen when the type changes.) + select place_id from placex where osm_type = 'N' and osm_id = waynodes[nodeidpos]::BIGINT and indexed_status < 100 order by (type = 'house'),place_id limit 1 INTO search_place_id; + IF search_place_id IS NOT NULL THEN + select * from placex where place_id = search_place_id INTO nextnode; + + IF nodeidpos > 1 and nodeidpos < array_upper(waynodes, 1) THEN + -- Make sure that the point is actually on the line. That might + -- be a bit paranoid but ensures that the algorithm still works + -- should osm2pgsql attempt to repair geometries. + splitline := split_line_on_node(linegeo, nextnode.geometry); + sectiongeo := ST_GeometryN(splitline, 1); + linegeo := ST_GeometryN(splitline, 2); + ELSE + sectiongeo = linegeo; END IF; + endnumber := substring(nextnode.housenumber,'[0-9]+')::integer; + + IF startnumber IS NOT NULL AND endnumber IS NOT NULL + AND @(startnumber - endnumber) < 1000 AND startnumber != endnumber + AND ST_GeometryType(sectiongeo) = 'ST_LineString' THEN - IF NOT havefirstpoint THEN - startnumber := ('0'||substring(nextnode.housenumber,'[0-9]+'))::integer; - IF startnumber IS NOT NULL AND startnumber > 0 THEN - havefirstpoint := true; - linestr := 'LINESTRING('||ST_X(nextnode.geometry)||' '||ST_Y(nextnode.geometry); - prevnode := nextnode; + IF (startnumber > endnumber) THEN + housenum := endnumber; + endnumber := startnumber; + startnumber := housenum; + sectiongeo := ST_Reverse(sectiongeo); END IF; ---RAISE WARNING 'interpolation start % % ',nextnode.place_id,startnumber; + orginalstartnumber := startnumber; + originalnumberrange := endnumber - startnumber; + + startnumber := startnumber + stepsize; + -- correct for odd/even + IF (interpolationtype = 'odd' AND startnumber%2 = 0) OR (interpolationtype = 'even' AND startnumber%2 = 1) THEN + startnumber := startnumber - 1; + END IF; + endnumber := endnumber - 1; + + delete from placex where osm_type = 'N' and osm_id = prevnode.osm_id and type = 'house' and place_id != prevnode.place_id; + FOR housenum IN startnumber..endnumber BY stepsize LOOP + -- this should really copy postcodes but it puts a huge burden on + -- the system for no big benefit ideally postcodes should move up to the way + insert into placex (osm_type, osm_id, class, type, admin_level, + housenumber, street, addr_place, isin, postcode, + country_code, parent_place_id, rank_address, rank_search, + indexed_status, geometry) + values ('N', prevnode.osm_id, 'place', 'house', prevnode.admin_level, + housenum, prevnode.street, prevnode.addr_place, prevnode.isin, coalesce(prevnode.postcode, defpostalcode), + prevnode.country_code, prevnode.parent_place_id, prevnode.rank_address, prevnode.rank_search, + 1, ST_LineInterpolatePoint(sectiongeo, (housenum::float-orginalstartnumber::float)/originalnumberrange::float)); + newpoints := newpoints + 1; +--RAISE WARNING 'interpolation number % % ',prevnode.place_id,housenum; + END LOOP; END IF; - END LOOP; + + -- early break if we are out of line string, + -- might happen when a line string loops back on itself + IF ST_GeometryType(linegeo) != 'ST_LineString' THEN + RETURN newpoints; + END IF; + + startnumber := substring(nextnode.housenumber,'[0-9]+')::integer; + prevnode := nextnode; END IF; - END IF; + END LOOP; --RAISE WARNING 'interpolation points % ',newpoints; @@ -1018,6 +993,13 @@ BEGIN NEW.rank_address := 5; END IF; + ELSEIF NEW.calculated_country_code = 'sg' THEN + + IF NEW.postcode ~ '^([0-9]{6})$' THEN + NEW.rank_search := 25; + NEW.rank_address := 11; + END IF; + ELSEIF NEW.calculated_country_code = 'de' THEN IF NEW.postcode ~ '^([0-9]{5})$' THEN @@ -1114,7 +1096,11 @@ BEGIN END IF; ELSEIF NEW.class = 'landuse' AND ST_GeometryType(NEW.geometry) in ('ST_Polygon','ST_MultiPolygon') THEN NEW.rank_search := 22; - NEW.rank_address := NEW.rank_search; + IF NEW.type in ('residential', 'farm', 'farmyard', 'industrial', 'commercial', 'allotments', 'retail') THEN + NEW.rank_address := NEW.rank_search; + ELSE + NEW.rank_address := 0; + END IF; ELSEIF NEW.class = 'natural' and NEW.type in ('peak','volcano','mountain_range') THEN NEW.rank_search := 18; NEW.rank_address := 0; @@ -1126,7 +1112,7 @@ BEGIN -- any feature more than 5 square miles is probably worth indexing ELSEIF ST_GeometryType(NEW.geometry) in ('ST_Polygon','ST_MultiPolygon') AND ST_Area(NEW.geometry) > 0.1 THEN NEW.rank_search := 22; - NEW.rank_address := NEW.rank_search; + NEW.rank_address := 0; ELSEIF NEW.class = 'highway' AND NEW.name is NULL AND NEW.type in ('service','cycleway','path','footway','steps','bridleway','track','byway','motorway_link','primary_link','trunk_link','secondary_link','tertiary_link') THEN -- RAISE WARNING 'unnamed minor feature %',NEW.osm_id; @@ -1328,7 +1314,6 @@ BEGIN result := deleteSearchName(NEW.partition, NEW.place_id); DELETE FROM place_addressline WHERE place_id = NEW.place_id; - DELETE FROM place_boundingbox where place_id = NEW.place_id; result := deleteRoad(NEW.partition, NEW.place_id); result := deleteLocationArea(NEW.partition, NEW.place_id, NEW.rank_search); UPDATE placex set linked_place_id = null where linked_place_id = NEW.place_id; @@ -1347,7 +1332,7 @@ BEGIN place_centroid := ST_PointOnSurface(NEW.geometry); NEW.centroid := null; - -- reclaculate country and partition + -- recalculate country and partition IF NEW.rank_search = 4 THEN -- for countries, believe the mapped country code, -- so that we remain in the right partition if the boundaries @@ -1372,12 +1357,15 @@ BEGIN -- waterway ways are linked when they are part of a relation and have the same class/type IF NEW.osm_type = 'R' and NEW.class = 'waterway' THEN - FOR relation IN select * from planet_osm_rels r where r.id = NEW.osm_id + FOR relation IN select * from planet_osm_rels r where r.id = NEW.osm_id and r.parts != array[]::bigint[] LOOP - FOR i IN relation.way_off+1..relation.rel_off LOOP - IF relation.members[2*i] in ('', 'main_stream') THEN + FOR i IN 1..array_upper(relation.members, 1) BY 2 LOOP + IF relation.members[i+1] in ('', 'main_stream', 'side_stream') AND substring(relation.members[i],1,1) = 'w' THEN --DEBUG: RAISE WARNING 'waterway parent %, child %/%', NEW.osm_id, i, relation.parts[i]; - FOR location IN SELECT * FROM placex WHERE osm_type = 'W' and osm_id = relation.parts[i] and class = NEW.class and type = NEW.type + FOR location IN SELECT * FROM placex + WHERE osm_type = 'W' and osm_id = substring(relation.members[i],2,200)::bigint + and class = NEW.class and type = NEW.type + and ( relation.members[i+1] != 'side_stream' or NEW.name->'name' = name->'name') LOOP UPDATE placex SET linked_place_id = NEW.place_id WHERE place_id = location.place_id; END LOOP; @@ -2087,8 +2075,8 @@ BEGIN -- Handle a place changing type by removing the old data -- My generated 'place' types are causing havok because they overlap with real keys -- TODO: move them to their own special purpose key/class to avoid collisions - IF existing.osm_type IS NULL AND (NEW.type not in ('postcode','house','houses')) THEN - DELETE FROM place where osm_type = NEW.osm_type and osm_id = NEW.osm_id and class = NEW.class and type not in ('postcode','house','houses'); + IF existing.osm_type IS NULL THEN + DELETE FROM place where osm_type = NEW.osm_type and osm_id = NEW.osm_id and class = NEW.class; END IF; --DEBUG: RAISE WARNING 'Existing: %',existing.osm_id; @@ -2333,29 +2321,29 @@ END; $$ LANGUAGE plpgsql IMMUTABLE; -CREATE OR REPLACE FUNCTION get_connected_ways(way_ids INTEGER[]) RETURNS SETOF planet_osm_ways - AS $$ -DECLARE - searchnodes INTEGER[]; - location RECORD; - j INTEGER; -BEGIN - - searchnodes := '{}'; - FOR j IN 1..array_upper(way_ids, 1) LOOP - FOR location IN - select nodes from planet_osm_ways where id = way_ids[j] LIMIT 1 - LOOP - IF not (ARRAY[location.nodes] <@ searchnodes) THEN - searchnodes := searchnodes || location.nodes; - END IF; - END LOOP; - END LOOP; - - RETURN QUERY select * from planet_osm_ways where nodes && searchnodes and NOT ARRAY[id] <@ way_ids; -END; -$$ -LANGUAGE plpgsql IMMUTABLE; +--CREATE OR REPLACE FUNCTION get_connected_ways(way_ids INTEGER[]) RETURNS SETOF planet_osm_ways +-- AS $$ +--DECLARE +-- searchnodes INTEGER[]; +-- location RECORD; +-- j INTEGER; +--BEGIN +-- +-- searchnodes := '{}'; +-- FOR j IN 1..array_upper(way_ids, 1) LOOP +-- FOR location IN +-- select nodes from planet_osm_ways where id = way_ids[j] LIMIT 1 +-- LOOP +-- IF not (ARRAY[location.nodes] <@ searchnodes) THEN +-- searchnodes := searchnodes || location.nodes; +-- END IF; +-- END LOOP; +-- END LOOP; +-- +-- RETURN QUERY select * from planet_osm_ways where nodes && searchnodes and NOT ARRAY[id] <@ way_ids; +--END; +--$$ +--LANGUAGE plpgsql IMMUTABLE; CREATE OR REPLACE FUNCTION get_address_postcode(for_place_id BIGINT) RETURNS TEXT AS $$ @@ -2487,7 +2475,7 @@ BEGIN CASE WHEN class = 'place' and type = 'postcode' THEN hstore('name', postcode) ELSE name END as name, class, type, admin_level, true as fromarea, true as isaddress, CASE WHEN rank_address = 0 THEN 100 WHEN rank_address = 11 THEN 5 ELSE rank_address END as rank_address, - 0 as distance, calculated_country_code + 0 as distance, calculated_country_code, postcode from placex where place_id = for_place_id LOOP @@ -2498,6 +2486,9 @@ BEGIN IF searchpostcode IS NOT NULL and location.type = 'postcode' THEN location.isaddress := FALSE; END IF; + IF searchpostcode IS NULL and location.postcode IS NOT NULL THEN + searchpostcode := location.postcode; + END IF; IF location.rank_address = 4 AND location.isaddress THEN hadcountry := true; END IF; @@ -2518,7 +2509,9 @@ BEGIN FOR location IN select placex.place_id, osm_type, osm_id, CASE WHEN class = 'place' and type = 'postcode' THEN hstore('name', postcode) ELSE name END as name, - class, type, admin_level, fromarea, isaddress, + CASE WHEN extratags ? 'place' THEN 'place' ELSE class END as class, + CASE WHEN extratags ? 'place' THEN extratags->'place' ELSE type END as type, + admin_level, fromarea, isaddress, CASE WHEN address_place_id = for_place_id AND rank_address = 0 THEN 100 WHEN rank_address = 11 THEN 5 ELSE rank_address END as rank_address, distance,calculated_country_code,postcode from place_addressline join placex on (address_place_id = placex.place_id) @@ -2590,86 +2583,10 @@ END; $$ LANGUAGE plpgsql; -CREATE OR REPLACE FUNCTION get_place_boundingbox(search_place_id BIGINT) RETURNS place_boundingbox - AS $$ -DECLARE - result place_boundingbox; - numfeatures integer; -BEGIN - select * from place_boundingbox into result where place_id = search_place_id; - IF result.place_id IS NULL THEN --- remove isaddress = true because if there is a matching polygon it always wins - select count(*) from place_addressline where address_place_id = search_place_id into numfeatures; - insert into place_boundingbox select place_id, - ST_Y(ST_PointN(ExteriorRing(ST_Box2D(geometry)),4)),ST_Y(ST_PointN(ExteriorRing(ST_Box2D(geometry)),2)), - ST_X(ST_PointN(ExteriorRing(ST_Box2D(geometry)),1)),ST_X(ST_PointN(ExteriorRing(ST_Box2D(geometry)),3)), - numfeatures, ST_Area(geometry), - geometry as area from location_area where place_id = search_place_id; - select * from place_boundingbox into result where place_id = search_place_id; - END IF; - IF result.place_id IS NULL THEN --- TODO 0.0001 - insert into place_boundingbox select address_place_id, - min(ST_Y(ST_Centroid(geometry))) as minlon,max(ST_Y(ST_Centroid(geometry))) as maxlon, - min(ST_X(ST_Centroid(geometry))) as minlat,max(ST_X(ST_Centroid(geometry))) as maxlat, - count(*), ST_Area(ST_Buffer(ST_Convexhull(ST_Collect(geometry)),0.0001)) as area, - ST_Buffer(ST_Convexhull(ST_Collect(geometry)),0.0001) as boundary - from (select * from place_addressline where address_place_id = search_place_id order by cached_rank_address limit 4000) as place_addressline join placex using (place_id) - where address_place_id = search_place_id --- and (isaddress = true OR place_id = search_place_id) - and (st_length(geometry) < 0.01 or place_id = search_place_id) - group by address_place_id limit 1; - select * from place_boundingbox into result where place_id = search_place_id; - END IF; - return result; -END; -$$ -LANGUAGE plpgsql; - --- don't do the operation if it would be slow -CREATE OR REPLACE FUNCTION get_place_boundingbox_quick(search_place_id BIGINT) RETURNS place_boundingbox - AS $$ -DECLARE - result place_boundingbox; - numfeatures integer; - rank integer; -BEGIN - select * from place_boundingbox into result where place_id = search_place_id; - IF result IS NULL AND rank > 14 THEN - select count(*) from place_addressline where address_place_id = search_place_id and isaddress = true into numfeatures; - insert into place_boundingbox select place_id, - ST_Y(ST_PointN(ExteriorRing(ST_Box2D(geometry)),4)),ST_Y(ST_PointN(ExteriorRing(ST_Box2D(geometry)),2)), - ST_X(ST_PointN(ExteriorRing(ST_Box2D(geometry)),1)),ST_X(ST_PointN(ExteriorRing(ST_Box2D(geometry)),3)), - numfeatures, ST_Area(geometry), - geometry as area from location_area where place_id = search_place_id; - select * from place_boundingbox into result where place_id = search_place_id; - END IF; - IF result IS NULL THEN - select rank_search from placex where place_id = search_place_id into rank; - IF rank > 20 THEN --- TODO 0.0001 - insert into place_boundingbox select address_place_id, - min(ST_Y(ST_Centroid(geometry))) as minlon,max(ST_Y(ST_Centroid(geometry))) as maxlon, - min(ST_X(ST_Centroid(geometry))) as minlat,max(ST_X(ST_Centroid(geometry))) as maxlat, - count(*), ST_Area(ST_Buffer(ST_Convexhull(ST_Collect(geometry)),0.0001)) as area, - ST_Buffer(ST_Convexhull(ST_Collect(geometry)),0.0001) as boundary - from place_addressline join placex using (place_id) - where address_place_id = search_place_id - and (isaddress = true OR place_id = search_place_id) - and (st_length(geometry) < 0.01 or place_id = search_place_id) - group by address_place_id limit 1; - select * from place_boundingbox into result where place_id = search_place_id; - END IF; - END IF; - return result; -END; -$$ -LANGUAGE plpgsql; CREATE OR REPLACE FUNCTION update_place(search_place_id BIGINT) RETURNS BOOLEAN AS $$ DECLARE - result place_boundingbox; numfeatures integer; BEGIN update placex set @@ -2949,14 +2866,14 @@ BEGIN wiki_article := regexp_replace(wiki_article,E'^(.*?)([a-z]{2,3}).wikipedia.org/wiki/',E'\\2:'); wiki_article := regexp_replace(wiki_article,E'^(.*?)([a-z]{2,3}).wikipedia.org/w/index.php\\?title=',E'\\2:'); wiki_article := regexp_replace(wiki_article,E'^(.*?)/([a-z]{2,3})/wiki/',E'\\2:'); - wiki_article := regexp_replace(wiki_article,E'^(.*?)([a-z]{2,3})[=:]',E'\\2:'); + --wiki_article := regexp_replace(wiki_article,E'^(.*?)([a-z]{2,3})[=:]',E'\\2:'); wiki_article := replace(wiki_article,' ','_'); - wiki_article_title := trim(split_part(wiki_article, ':', 2)); - IF wiki_article_title IS NULL OR wiki_article_title = '' THEN + IF strpos(wiki_article, ':') IN (3,4) THEN + wiki_article_language := lower(trim(split_part(wiki_article, ':', 1))); + wiki_article_title := trim(substr(wiki_article, strpos(wiki_article, ':')+1)); + ELSE wiki_article_title := trim(wiki_article); wiki_article_language := CASE WHEN langs[i] = 'english' THEN 'en' WHEN langs[i] = 'country' THEN get_country_language_code(country_code) ELSE langs[i] END; - ELSE - wiki_article_language := lower(trim(split_part(wiki_article, ':', 1))); END IF; select wikipedia_article.language,wikipedia_article.title,wikipedia_article.importance