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add script for recomputing word frequencies

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Sarah Hoffmann 2015-02-27 19:53:11 +01:00
parent 340b9793d6
commit c6d8e91b88
1 changed files with 14 additions and 0 deletions
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sql/words.sql Normal file
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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(make_keywords(v)) from (select distinct postcode as v from place) as w where v is not null;
select count(getorcreate_housenumber_id(make_standard_name(v))) from (select distinct housenumber as v from place where housenumber is not null) 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;