2021-09-12 12:35:27 +00:00
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-- Tags: long
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2019-08-08 12:42:48 +00:00
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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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2020-08-15 17:55:49 +00:00
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INSERT INTO topk WITH number % 7 = 0 AS frequent SELECT toString(frequent ? number % 10 : number), frequent ? 999999999 : number FROM numbers(4000000);
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2019-08-08 12:42:48 +00:00
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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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