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https://github.com/pgvector/pgvector.git
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32 lines
1.0 KiB
Perl
32 lines
1.0 KiB
Perl
use strict;
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use warnings;
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use PostgresNode;
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use TestLib;
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use Test::More tests => 3;
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# Initialize node
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my $node = get_new_node('node');
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$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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$node->safe_psql("postgres", "CREATE TABLE tst (v vector(3));");
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$node->safe_psql("postgres",
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"INSERT INTO tst SELECT ARRAY[random(), random(), random()] FROM generate_series(1, 100000) i;"
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);
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$node->safe_psql("postgres", "CREATE INDEX lists50 ON tst USING ivfflat (v) WITH (lists = 50);");
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$node->safe_psql("postgres", "CREATE INDEX lists100 ON tst USING ivfflat (v) WITH (lists = 100);");
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# Test prefers more lists
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my $res = $node->safe_psql("postgres", "EXPLAIN SELECT v FROM tst ORDER BY v <-> '[0.5,0.5,0.5]' LIMIT 10;");
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like($res, qr/lists100/);
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unlike($res, qr/lists50/);
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# Test errors with too much memory
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my ($ret, $stdout, $stderr) = $node->psql("postgres",
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"CREATE INDEX lists10000 ON tst USING ivfflat (v) WITH (lists = 10000);"
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);
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like($stderr, qr/memory required is/);
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