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13 lines
454 B
MySQL
13 lines
454 B
MySQL
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DROP TABLE IF EXISTS topk;
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CREATE TABLE topk (val1 String, val2 UInt32) ENGINE = MergeTree ORDER BY val1;
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INSERT INTO topk SELECT toString(number), number FROM numbers(3000000);
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INSERT INTO topk SELECT toString(number % 10), 999999999 FROM numbers(1000000);
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SELECT arraySort(topK(10)(val1)) FROM topk;
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SELECT arraySort(topKWeighted(10)(val1, val2)) FROM topk;
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SELECT topKWeighted(10)(toString(number), number) from numbers(3000000);
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DROP TABLE topk;
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