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https://github.com/pgvector/pgvector.git
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45 lines
1.1 KiB
Perl
45 lines
1.1 KiB
Perl
use strict;
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use warnings;
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use PostgreSQL::Test::Cluster;
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use PostgreSQL::Test::Utils;
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use Test::More;
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# Initialize node
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my $node = PostgreSQL::Test::Cluster->new('node');
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$node->init;
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$node->start;
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# Create table
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$node->safe_psql("postgres", "CREATE EXTENSION vector;");
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$node->safe_psql("postgres", "CREATE TABLE tst (i int4 primary key, v vector(3));");
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$node->safe_psql("postgres",
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"INSERT INTO tst SELECT i, ARRAY[random(), random(), random()] FROM generate_series(1, 100000) i;"
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);
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# Check each index type
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my @operators = ("<->", "<#>", "<=>");
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my @opclasses = ("vector_l2_ops", "vector_ip_ops", "vector_cosine_ops");
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for my $i (0 .. $#operators)
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{
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my $operator = $operators[$i];
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my $opclass = $opclasses[$i];
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# Add index
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$node->safe_psql("postgres", "CREATE INDEX ON tst USING ivfflat (v $opclass);");
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# Test 100% recall
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for (1 .. 20)
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{
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my $id = int(rand() * 100000);
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my $query = $node->safe_psql("postgres", "SELECT v FROM tst WHERE i = $id;");
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my $res = $node->safe_psql("postgres", qq(
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SET enable_seqscan = off;
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SELECT v FROM tst ORDER BY v <-> '$query' LIMIT 1;
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));
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is($res, $query);
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}
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}
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done_testing();
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