mirror of
https://github.com/pgvector/pgvector.git
synced 2026-07-05 20:20:59 +08:00
104 lines
2.2 KiB
Perl
104 lines
2.2 KiB
Perl
use strict;
|
|
use warnings;
|
|
use PostgresNode;
|
|
use TestLib;
|
|
use Test::More;
|
|
|
|
my $node;
|
|
my @queries = ();
|
|
my @expected;
|
|
my $limit = 20;
|
|
|
|
sub test_recall
|
|
{
|
|
my ($min, $operator) = @_;
|
|
my $correct = 0;
|
|
my $total = 0;
|
|
|
|
my $explain = $node->safe_psql("postgres", qq(
|
|
SET enable_seqscan = off;
|
|
EXPLAIN ANALYZE SELECT i FROM tst ORDER BY v $operator '$queries[0]' LIMIT $limit;
|
|
));
|
|
like($explain, qr/Index Scan/);
|
|
|
|
for my $i (0 .. $#queries) {
|
|
my $actual = $node->safe_psql("postgres", qq(
|
|
SET enable_seqscan = off;
|
|
SELECT i FROM tst ORDER BY v $operator '$queries[$i]' LIMIT $limit;
|
|
));
|
|
my @actual_ids = split("\n", $actual);
|
|
my %actual_set = map { $_ => 1 } @actual_ids;
|
|
|
|
my @expected_ids = split("\n", $expected[$i]);
|
|
|
|
foreach (@expected_ids) {
|
|
if (exists($actual_set{$_})) {
|
|
$correct++;
|
|
}
|
|
$total++;
|
|
}
|
|
}
|
|
|
|
cmp_ok($correct / $total, ">=", $min, $operator);
|
|
}
|
|
|
|
# Initialize node
|
|
$node = get_new_node('node');
|
|
$node->init;
|
|
$node->start;
|
|
|
|
# Create table
|
|
$node->safe_psql("postgres", "CREATE EXTENSION vector;");
|
|
$node->safe_psql("postgres", "CREATE TABLE tst (i int4, v vector(3));");
|
|
|
|
# Generate queries
|
|
for (1..20) {
|
|
my $r1 = rand();
|
|
my $r2 = rand();
|
|
my $r3 = rand();
|
|
push(@queries, "[$r1,$r2,$r3]");
|
|
}
|
|
|
|
# Check each index type
|
|
my @operators = ("<->", "<#>", "<=>");
|
|
|
|
foreach (@operators) {
|
|
my $operator = $_;
|
|
|
|
# Add index
|
|
my $opclass;
|
|
if ($operator eq "<->") {
|
|
$opclass = "vector_l2_ops";
|
|
} elsif ($operator eq "<#>") {
|
|
$opclass = "vector_ip_ops";
|
|
} else {
|
|
$opclass = "vector_cosine_ops";
|
|
}
|
|
$node->safe_psql("postgres", "CREATE INDEX idx ON tst USING hnsw (v $opclass);");
|
|
|
|
$node->safe_psql("postgres",
|
|
"INSERT INTO tst SELECT i, ARRAY[random(), random(), random()] FROM generate_series(1, 10000) i;"
|
|
);
|
|
|
|
# Get exact results
|
|
@expected = ();
|
|
foreach (@queries) {
|
|
my $res = $node->safe_psql("postgres", qq(
|
|
SET enable_indexscan = off;
|
|
SELECT i FROM tst ORDER BY v $operator '$_' LIMIT $limit;
|
|
));
|
|
push(@expected, $res);
|
|
}
|
|
|
|
if ($operator eq "<#>") {
|
|
test_recall(0.80, $operator);
|
|
} else {
|
|
test_recall(0.99, $operator);
|
|
}
|
|
|
|
$node->safe_psql("postgres", "DROP INDEX idx;");
|
|
$node->safe_psql("postgres", "TRUNCATE tst;");
|
|
}
|
|
|
|
done_testing();
|