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Added HNSW index type - #181

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This commit is contained in:
Andrew Kane
2023-08-08 16:42:47 -07:00
parent 19a6c81367
commit 51d292c93d
29 changed files with 3927 additions and 7 deletions
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25
sql/vector.sql
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@@ -227,7 +227,7 @@ CREATE OPERATOR > (
RESTRICT = scalargtsel, JOIN = scalargtjoinsel
);
-- access method
-- access methods
CREATE FUNCTION ivfflathandler(internal) RETURNS index_am_handler
AS 'MODULE_PATHNAME' LANGUAGE C;
@@ -236,6 +236,13 @@ CREATE ACCESS METHOD ivfflat TYPE INDEX HANDLER ivfflathandler;
COMMENT ON ACCESS METHOD ivfflat IS 'ivfflat index access method';
CREATE FUNCTION hnswhandler(internal) RETURNS index_am_handler
AS 'MODULE_PATHNAME' LANGUAGE C;
CREATE ACCESS METHOD hnsw TYPE INDEX HANDLER hnswhandler;
COMMENT ON ACCESS METHOD hnsw IS 'hnsw index access method';
-- opclasses
CREATE OPERATOR CLASS vector_ops
@@ -267,3 +274,19 @@ CREATE OPERATOR CLASS vector_cosine_ops
FUNCTION 2 vector_norm(vector),
FUNCTION 3 vector_spherical_distance(vector, vector),
FUNCTION 4 vector_norm(vector);
CREATE OPERATOR CLASS vector_l2_ops
FOR TYPE vector USING hnsw AS
OPERATOR 1 <-> (vector, vector) FOR ORDER BY float_ops,
FUNCTION 1 vector_l2_squared_distance(vector, vector);
CREATE OPERATOR CLASS vector_ip_ops
FOR TYPE vector USING hnsw AS
OPERATOR 1 <#> (vector, vector) FOR ORDER BY float_ops,
FUNCTION 1 vector_negative_inner_product(vector, vector);
CREATE OPERATOR CLASS vector_cosine_ops
FOR TYPE vector USING hnsw AS
OPERATOR 1 <=> (vector, vector) FOR ORDER BY float_ops,
FUNCTION 1 vector_negative_inner_product(vector, vector),
FUNCTION 2 vector_norm(vector);