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45 lines
1.2 KiB
SQL
45 lines
1.2 KiB
SQL
SELECT bitHammingDistance(1, 5);
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SELECT bitHammingDistance(100, 100000);
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SELECT bitHammingDistance(-1, 1);
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DROP TABLE IF EXISTS defaults;
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CREATE TABLE defaults
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(
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n1 UInt8,
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n2 UInt16,
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n3 UInt32,
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n4 UInt64
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)ENGINE = Memory();
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INSERT INTO defaults VALUES (1, 2, 3, 4) (12, 4345, 435, 1233) (45, 675, 32343, 54566) (90, 784, 9034, 778752);
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SELECT bitHammingDistance(4, n1) FROM defaults;
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SELECT bitHammingDistance(n2, 100) FROM defaults;
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SELECT bitHammingDistance(n3, n4) FROM defaults;
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DROP TABLE defaults;
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DROP TABLE IF EXISTS test_string;
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CREATE TABLE test_string
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(
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s1 String,
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s2 String,
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s3 FixedString(10),
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s4 FixedString(10),
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) ENGINE = Memory;
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INSERT INTO test_string VALUES ('hello', 'hello', 'hello', 'hello') ('hello', 'hellow', 'hello', 'hellow') ('clickhouse', '012345', 'clickhouse', '012345');
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SELECT bitHammingDistance('hello', 'hello');
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SELECT bitHammingDistance('hello', 'hellow');
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SELECT bitHammingDistance(toFixedString('hello', 6), toFixedString('hellow', 6));
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SELECT bitHammingDistance(s1, s2) FROM test_string;
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SELECT bitHammingDistance(s3, s4) FROM test_string;
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SELECT bitHammingDistance('hello', s2) FROM test_string;
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SELECT bitHammingDistance(s4, toFixedString('hello', 10)) FROM test_string;
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DROP TABLE test_string;
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