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set enable_seqscan=off;
CREATE TABLE test_varchar (
i varchar
);
INSERT INTO test_varchar VALUES ('aaa'),('a'),('abc'),('abb'),('axy'),('xyz');
CREATE INDEX idx_varchar ON test_varchar USING gin (i);
SELECT * FROM test_varchar WHERE i<'abc'::varchar ORDER BY i;
SELECT * FROM test_varchar WHERE i<='abc'::varchar ORDER BY i;
SELECT * FROM test_varchar WHERE i='abc'::varchar ORDER BY i;
SELECT * FROM test_varchar WHERE i>='abc'::varchar ORDER BY i;
SELECT * FROM test_varchar WHERE i>'abc'::varchar ORDER BY i;
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