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36 lines
1.9 KiB
SQL
36 lines
1.9 KiB
SQL
DROP TABLE IF EXISTS test_hilbert_encode_hilbert_encode;
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CREATE TABLE test_hilbert_encode (x UInt32, y UInt32) ENGINE = MergeTree ORDER BY hilbertEncode(x, y) SETTINGS index_granularity = 8192, index_granularity_bytes = '1Mi';
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INSERT INTO test_hilbert_encode SELECT number DIV 1024, number % 1024 FROM numbers(1048576);
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SET max_rows_to_read = 8192, force_primary_key = 1, analyze_index_with_space_filling_curves = 1;
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SELECT count() FROM test_hilbert_encode WHERE x >= 10 AND x <= 20 AND y >= 20 AND y <= 30;
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SET max_rows_to_read = 8192, force_primary_key = 1, analyze_index_with_space_filling_curves = 0;
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SELECT count() FROM test_hilbert_encode WHERE x >= 10 AND x <= 20 AND y >= 20 AND y <= 30; -- { serverError 277 }
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DROP TABLE test_hilbert_encode;
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-- The same, but with more precise index
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CREATE TABLE test_hilbert_encode (x UInt32, y UInt32) ENGINE = MergeTree ORDER BY hilbertEncode(x, y) SETTINGS index_granularity = 1;
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SET max_rows_to_read = 0;
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INSERT INTO test_hilbert_encode SELECT number DIV 32, number % 32 FROM numbers(1024);
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SET max_rows_to_read = 200, force_primary_key = 1, analyze_index_with_space_filling_curves = 1;
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SELECT count() FROM test_hilbert_encode WHERE x >= 10 AND x <= 20 AND y >= 20 AND y <= 30;
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-- Various other conditions
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SELECT count() FROM test_hilbert_encode WHERE x = 10 SETTINGS max_rows_to_read = 49;
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SELECT count() FROM test_hilbert_encode WHERE x = 10 AND y > 10 SETTINGS max_rows_to_read = 33;
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SELECT count() FROM test_hilbert_encode WHERE x = 10 AND y < 10 SETTINGS max_rows_to_read = 15;
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SELECT count() FROM test_hilbert_encode WHERE y = 10 SETTINGS max_rows_to_read = 50;
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SELECT count() FROM test_hilbert_encode WHERE x >= 10 AND y = 10 SETTINGS max_rows_to_read = 35;
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SELECT count() FROM test_hilbert_encode WHERE y = 10 AND x <= 10 SETTINGS max_rows_to_read = 17;
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SELECT count() FROM test_hilbert_encode PREWHERE x >= 10 WHERE x < 11 AND y = 10 SETTINGS max_rows_to_read = 2;
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DROP TABLE test_hilbert_encode;
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