$sSQL = 'ALTER TABLE placex DISABLE TRIGGER ALL;';
$sSQL .= 'UPDATE placex SET (wikipedia, importance) = (SELECT wikipedia, importance FROM compute_importance(extratags, country_code, osm_type, osm_id));';
+ $sSQL .= 'UPDATE placex s SET wikipedia = d.wikipedia, importance = d.importance FROM placex d WHERE s.place_id = d.linked_place_id and d.wikipedia is not null and (s.wikipedia is null or s.importance < d.importance);';
$sSQL .= 'ALTER TABLE placex ENABLE TRIGGER ALL;';
$oDB->exec($sSQL);
}