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Updated cost estimation to not use index when expected tuples is too low

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This commit is contained in:
Andrew Kane
2024-01-21 12:39:57 -08:00
parent 91acc3c178
commit f133e841b5
25 changed files with 223 additions and 50 deletions
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4
test/sql/ivfflat_ip.sql
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@@ -6,7 +6,7 @@ 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;
SELECT * FROM t ORDER BY val <#> '[3,3,3]' LIMIT 5;
SELECT COUNT(*) FROM (SELECT * FROM t ORDER BY val <#> (SELECT NULL::vector) LIMIT 5) t2;
DROP TABLE t;