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# CITYHASH64



#### Syntax {#syntax}


```
CITYHASH64( value )
```

#### Description {#description}
Returns the CityHash64 hash of `value` as an integer.

**Argument types:**
- `value` — `String`


**Return type**: `Integer`

#### Example {#examples}

```
CITYHASH64("DataLens") = 1276466053635395874
```


#### Data source support {#data-source-support}

`ClickHouse 21.8`, `YDB`.