mirror of
https://github.com/pgvector/pgvector.git
synced 2026-06-06 05:51:21 +08:00
14 lines
475 B
SQL
14 lines
475 B
SQL
SET enable_seqscan = off;
|
|
|
|
CREATE TABLE t (val sparsevec(3));
|
|
INSERT INTO t (val) VALUES ('{}/3'), ('{0:1,1:2,2:3}/3'), ('{0:1,1:1,2:1}/3'), (NULL);
|
|
CREATE INDEX ON t USING hnsw (val sparsevec_cosine_ops);
|
|
|
|
INSERT INTO t (val) VALUES ('{0:1,1:2,2:4}/3');
|
|
|
|
SELECT * FROM t ORDER BY val <=> '{0:3,1:3,2:3}/3';
|
|
SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <=> '{}/3') t2;
|
|
SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <=> (SELECT NULL::sparsevec)) t2;
|
|
|
|
DROP TABLE t;
|