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17 lines
596 B
SQL
17 lines
596 B
SQL
-- SET force_parallel_mode = on;
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SET parallel_setup_cost = 10;
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SET parallel_tuple_cost = 0.000001;
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SET min_parallel_table_scan_size = 1;
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SET min_parallel_index_scan_size = 1;
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CREATE TABLE t (id integer, val vector(3));
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ALTER TABLE t ALTER COLUMN val SET STORAGE PLAIN;
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INSERT INTO t (id, val) SELECT n, ARRAY[random(), random(), random()] FROM generate_series(1,1000000) n;
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CREATE INDEX ON t USING ivfflat (val) WITH (lists = 10);
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SET ivfflat.probes = 4;
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EXPLAIN SELECT * FROM t ORDER BY val <-> '[0.5,0.5,0.5]' LIMIT 5;
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SELECT * FROM t ORDER BY val <-> '[0.5,0.5,0.5]' LIMIT 5;
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DROP TABLE t;
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