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31 lines
661 B
Markdown
31 lines
661 B
Markdown
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---
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toc_priority: 103
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---
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# anyHeavy {#anyheavyx}
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选择一个频繁出现的值，使用[heavy hitters](http://www.cs.umd.edu/~samir/498/karp.pdf) 算法。 如果某个值在查询的每个执行线程中出现的情况超过一半，则返回此值。 通常情况下，结果是不确定的。
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``` sql
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anyHeavy(column)
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```
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**参数**
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- `column` – The column name.
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**示例**
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使用 [OnTime](../../getting-started/example-datasets/ontime.md) 数据集，并选择在 `AirlineID` 列任何频繁出现的值。
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``` sql
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SELECT anyHeavy(AirlineID) AS res
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FROM ontime
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```
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``` text
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┌───res─┐
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│ 19690 │
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└───────┘
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```
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