mirror of
https://github.com/hanzoai/sql-vector.git
synced 2026-10-01 00:37:19 +00:00
Andrew Kaneandzeekay
1d5cb54402
(cherry picked from commit 721fcf4d2c92e2ef022c42304d547b807cbfbee1)
101 lines
2.6 KiB
SQL
101 lines
2.6 KiB
SQL
SET enable_seqscan = off;
|
|
|
|
-- L2
|
|
|
|
CREATE TABLE t (val vector(3));
|
|
INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
|
|
CREATE INDEX ON t USING ivfflat (val vector_l2_ops) WITH (lists = 1);
|
|
|
|
INSERT INTO t (val) VALUES ('[1,2,4]');
|
|
|
|
SELECT * FROM t ORDER BY val <-> '[3,3,3]';
|
|
SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <-> (SELECT NULL::vector)) t2;
|
|
SELECT COUNT(*) FROM t;
|
|
|
|
TRUNCATE t;
|
|
SELECT * FROM t ORDER BY val <-> '[3,3,3]';
|
|
|
|
DROP TABLE t;
|
|
|
|
-- inner product
|
|
|
|
CREATE TABLE t (val vector(3));
|
|
INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
|
|
CREATE INDEX ON t USING ivfflat (val vector_ip_ops) WITH (lists = 1);
|
|
|
|
INSERT INTO t (val) VALUES ('[1,2,4]');
|
|
|
|
SELECT * FROM t ORDER BY val <#> '[3,3,3]';
|
|
SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <#> (SELECT NULL::vector)) t2;
|
|
|
|
DROP TABLE t;
|
|
|
|
-- cosine
|
|
|
|
CREATE TABLE t (val vector(3));
|
|
INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
|
|
CREATE INDEX ON t USING ivfflat (val vector_cosine_ops) WITH (lists = 1);
|
|
|
|
INSERT INTO t (val) VALUES ('[1,2,4]');
|
|
|
|
SELECT * FROM t ORDER BY val <=> '[3,3,3]';
|
|
SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <=> '[0,0,0]') t2;
|
|
SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <=> (SELECT NULL::vector)) t2;
|
|
SELECT * FROM t CROSS JOIN LATERAL (SELECT * FROM t t2 ORDER BY val <=> t.val LIMIT 1) t2 WHERE t.val != '[0,0,0]' ORDER BY t.val;
|
|
|
|
DROP TABLE t;
|
|
|
|
-- iterative
|
|
|
|
CREATE TABLE t (val vector(3));
|
|
INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
|
|
CREATE INDEX ON t USING ivfflat (val vector_l2_ops) WITH (lists = 3);
|
|
|
|
SET ivfflat.iterative_scan = relaxed_order;
|
|
SELECT * FROM t ORDER BY val <-> '[3,3,3]';
|
|
|
|
SET ivfflat.max_probes = 1;
|
|
SELECT * FROM t ORDER BY val <-> '[3,3,3]';
|
|
|
|
SET ivfflat.max_probes = 2;
|
|
SELECT * FROM t ORDER BY val <-> '[3,3,3]';
|
|
|
|
TRUNCATE t;
|
|
SELECT * FROM t ORDER BY val <-> '[3,3,3]';
|
|
|
|
RESET ivfflat.iterative_scan;
|
|
RESET ivfflat.max_probes;
|
|
DROP TABLE t;
|
|
|
|
-- unlogged
|
|
|
|
CREATE UNLOGGED TABLE t (val vector(3));
|
|
INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
|
|
CREATE INDEX ON t USING ivfflat (val vector_l2_ops) WITH (lists = 1);
|
|
|
|
SELECT * FROM t ORDER BY val <-> '[3,3,3]';
|
|
|
|
DROP TABLE t;
|
|
|
|
-- options
|
|
|
|
CREATE TABLE t (val vector(3));
|
|
CREATE INDEX ON t USING ivfflat (val vector_l2_ops) WITH (lists = 0);
|
|
CREATE INDEX ON t USING ivfflat (val vector_l2_ops) WITH (lists = 32769);
|
|
|
|
SHOW ivfflat.probes;
|
|
|
|
SET ivfflat.probes = 0;
|
|
SET ivfflat.probes = 32769;
|
|
|
|
SHOW ivfflat.iterative_scan;
|
|
|
|
SET ivfflat.iterative_scan = on;
|
|
|
|
SHOW ivfflat.max_probes;
|
|
|
|
SET ivfflat.max_probes = 0;
|
|
SET ivfflat.max_probes = 32769;
|
|
|
|
DROP TABLE t;
|