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22 lines
417 B
Plaintext
22 lines
417 B
Plaintext
SET enable_seqscan = off;
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CREATE TABLE t (val bit(3));
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INSERT INTO t (val) VALUES (B'000'), (B'100'), (B'111'), (NULL);
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CREATE INDEX ON t USING hnsw (val bit_hamming_ops);
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INSERT INTO t (val) VALUES (B'110');
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SELECT * FROM t ORDER BY val <~> B'111';
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val
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-----
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111
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110
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100
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000
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(4 rows)
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SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <~> (SELECT NULL::bit)) t2;
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count
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-------
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4
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(1 row)
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DROP TABLE t;
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