Nominatim/lib-sql/words.sql
Sarah Hoffmann b9517c99ae rename sql directory to lib-sql
Also introduces a separate constant for the sql directory, so that
it can be put separately from the rest of the data if required.
2021-02-09 15:26:56 +01:00

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SQL

CREATE TABLE word_frequencies AS
(SELECT unnest(make_keywords(v)) as id, sum(count) as count
FROM (select svals(name) as v, count(*)from place group by v) cnt
WHERE v is not null
GROUP BY id);
select count(getorcreate_postcode_id(v)) from (select distinct address->'postcode' as v from place where address ? 'postcode') as w where v is not null;
select count(getorcreate_housenumber_id(make_standard_name(v))) from (select distinct address->'housenumber' as v from place where address ? 'housenumber') as w;
-- copy the word frequencies
update word set search_name_count = count from word_frequencies wf where wf.id = word.word_id;
-- and drop the temporary frequency table again
drop table word_frequencies;