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36 lines
935 B
SQL
36 lines
935 B
SQL
SET enable_seqscan = off;
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-- hamming
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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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SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <~> (SELECT NULL::bit)) t2;
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DROP TABLE t;
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-- jaccard
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CREATE TABLE t (val bit(4));
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INSERT INTO t (val) VALUES (B'0000'), (B'1100'), (B'1111'), (NULL);
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CREATE INDEX ON t USING hnsw (val bit_jaccard_ops);
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INSERT INTO t (val) VALUES (B'1110');
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SELECT * FROM t ORDER BY val <%> B'1111';
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SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <%> (SELECT NULL::bit)) t2;
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DROP TABLE t;
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-- varbit
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CREATE TABLE t (val varbit(3));
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CREATE INDEX ON t USING hnsw (val bit_hamming_ops);
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CREATE INDEX ON t USING hnsw ((val::bit(3)) bit_hamming_ops);
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CREATE INDEX ON t USING hnsw ((val::bit(64001)) bit_hamming_ops);
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DROP TABLE t;
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