mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-24 18:50:49 +00:00
258d2fd499
* normalize
* split & adjust links
* re-normalize
* adjust ru links
* adjust ja/tr links
* partially apply e0d19d2aea
* reset contribs
31 lines
719 B
Markdown
31 lines
719 B
Markdown
---
|
||
toc_priority: 103
|
||
---
|
||
|
||
# anyHeavy {#anyheavyx}
|
||
|
||
Selects a frequently occurring value using the [heavy hitters](http://www.cs.umd.edu/~samir/498/karp.pdf) algorithm. If there is a value that occurs more than in half the cases in each of the query’s execution threads, this value is returned. Normally, the result is nondeterministic.
|
||
|
||
``` sql
|
||
anyHeavy(column)
|
||
```
|
||
|
||
**Arguments**
|
||
|
||
- `column` – The column name.
|
||
|
||
**Example**
|
||
|
||
Take the [OnTime](../../../getting-started/example-datasets/ontime.md) data set and select any frequently occurring value in the `AirlineID` column.
|
||
|
||
``` sql
|
||
SELECT anyHeavy(AirlineID) AS res
|
||
FROM ontime
|
||
```
|
||
|
||
``` text
|
||
┌───res─┐
|
||
│ 19690 │
|
||
└───────┘
|
||
```
|