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Hello!
Experimented with RUM.
Purely by chance, I created a table:
CREATE TABLE test
(
tsvector1 tsvector,
tsvector2 tsvector
);
Insert data into it:
INSERT INTO test(tsvector1, tsvector2)
SELECT to_tsvector('russian'::regconfig, 'тест '||s), to_tsvector('english'::regconfig, 'test '||s)
FROM generate_series(1, 1000000) s;
Created an index:
CREATE INDEX idx_test_rum
ON test
USING rum (tsvector1, tsvector2);
Run the SQL statement:
SELECT *,
tsvector1 <=> plainto_tsquery('russian'::regconfig, 'тест') as rank1,
tsvector2 <=> plainto_tsquery('english'::regconfig, 'test') as rank2
FROM test
WHERE tsvector1 @@ plainto_tsquery('russian'::regconfig, 'тест')
ORDER BY rank1, rank2
LIMIT 1000;
SQL statement runs infinitely!
Query is not canceled by pg_cancel_backend and disconnect client.
Unable to stop server PostgreSQL.
Only kill -SIGKILL.
I check this on PostgreSQL 10 and PostgreSQL 12.
RUM latest release 1.3.6 and latest commit e34375a.
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