mirror of
https://github.com/pgvector/pgvector.git
synced 2026-06-25 23:31:16 +08:00
17 lines
465 B
SQL
17 lines
465 B
SQL
SET enable_seqscan = off;
|
|
|
|
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]' LIMIT 5;
|
|
SELECT * FROM t ORDER BY val <-> (SELECT NULL::vector) LIMIT 5;
|
|
SELECT COUNT(*) FROM t;
|
|
|
|
TRUNCATE t;
|
|
SELECT * FROM t ORDER BY val <-> '[3,3,3]' LIMIT 5;
|
|
|
|
DROP TABLE t;
|