|
| 1 | +SELECT t, |
| 2 | +Array[t,t+1,t+2]::vector(3) AS val |
| 3 | +INTO test_where |
| 4 | +FROM generate_series(1, 2000) as t; |
| 5 | +SELECT t FROM test_where WHERE t>1500 ORDER BY val <-> '[1000.2,1000,1000.1]' LIMIT 2; |
| 6 | + t |
| 7 | +------ |
| 8 | + 1501 |
| 9 | + 1502 |
| 10 | +(2 rows) |
| 11 | + |
| 12 | +CREATE INDEX test_where_idx ON test_where USING hnsw (val vector_l2_ops) WITH (m=10); |
| 13 | +set hnsw.streaming=off; |
| 14 | +set hnsw.ef_search=100; |
| 15 | +SELECT t FROM test_where WHERE t>1500 ORDER BY val <-> '[1000.2,1000,1000.1]' LIMIT 2; |
| 16 | + t |
| 17 | +--- |
| 18 | +(0 rows) |
| 19 | + |
| 20 | +set hnsw.streaming=on; |
| 21 | +SELECT t FROM test_where WHERE t>1500 ORDER BY val <-> '[1000.2,1000,1000.1]' LIMIT 2; |
| 22 | + t |
| 23 | +------ |
| 24 | + 1501 |
| 25 | + 1502 |
| 26 | +(2 rows) |
| 27 | + |
| 28 | +SELECT t FROM test_where WHERE t>2000 ORDER BY val <-> '[1000.2,1000,1000.1]' LIMIT 2; |
| 29 | + t |
| 30 | +--- |
| 31 | +(0 rows) |
| 32 | + |
| 33 | +DELETE FROM test_where; |
| 34 | +SELECT t FROM test_where WHERE t>1500 ORDER BY val <-> '[1000.2,1000,1000.1]' LIMIT 2; |
| 35 | + t |
| 36 | +--- |
| 37 | +(0 rows) |
| 38 | + |
| 39 | +TRUNCATE test_where; |
| 40 | +SELECT t FROM test_where WHERE t>1500 ORDER BY val <-> '[1000.2,1000,1000.1]' LIMIT 2; |
| 41 | + t |
| 42 | +--- |
| 43 | +(0 rows) |
| 44 | + |
| 45 | +DROP TABLE test_where; |
| 46 | +SET enable_seqscan = off; |
| 47 | +CREATE TABLE t (val vector(3)); |
| 48 | +INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL); |
| 49 | +CREATE INDEX t_idx ON t USING hnsw (val vector_l2_ops); |
| 50 | +INSERT INTO t (val) VALUES ('[1,2,4]'); |
| 51 | +SELECT * FROM t ORDER BY val <-> '[3,3,3]'; |
| 52 | + val |
| 53 | +--------- |
| 54 | + [1,2,3] |
| 55 | + [1,2,4] |
| 56 | + [1,1,1] |
| 57 | + [0,0,0] |
| 58 | +(4 rows) |
| 59 | + |
| 60 | +SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <-> (SELECT NULL::vector)) t2; |
| 61 | + count |
| 62 | +------- |
| 63 | + 4 |
| 64 | +(1 row) |
| 65 | + |
| 66 | +SELECT COUNT(*) FROM t; |
| 67 | + count |
| 68 | +------- |
| 69 | + 5 |
| 70 | +(1 row) |
| 71 | + |
| 72 | +TRUNCATE t; |
| 73 | +SELECT * FROM t ORDER BY val <-> '[3,3,3]'; |
| 74 | + val |
| 75 | +----- |
| 76 | +(0 rows) |
| 77 | + |
| 78 | +DROP TABLE t; |
| 79 | +SET enable_seqscan = off; |
| 80 | +CREATE TABLE t (val vector(3)); |
| 81 | +INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL); |
| 82 | +CREATE INDEX t_idx ON t USING hnsw (val vector_ip_ops); |
| 83 | +INSERT INTO t (val) VALUES ('[1,2,4]'); |
| 84 | +SELECT * FROM t ORDER BY val <#> '[3,3,3]'; |
| 85 | + val |
| 86 | +--------- |
| 87 | + [1,2,4] |
| 88 | + [1,2,3] |
| 89 | + [1,1,1] |
| 90 | + [0,0,0] |
| 91 | +(4 rows) |
| 92 | + |
| 93 | +SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <#> (SELECT NULL::vector)) t2; |
| 94 | + count |
| 95 | +------- |
| 96 | + 4 |
| 97 | +(1 row) |
| 98 | + |
| 99 | +DROP TABLE t; |
| 100 | +set hnsw.streaming=off; |
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