Amazon Redshift will no longer support the creation of new Python UDFs starting Patch 198. Existing Python UDFs will continue to function until June 30, 2026. For more information, see the [ blog post ](https://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/). 

# farmFingerprint64 function
<a name="r_FARMFINGERPRINT64"></a>

Computes the farmhash value of the input argument using the `Fingerprint64` function. 

## Syntax
<a name="r_FARMFINGERPRINT64-synopsis"></a>

```
farmFingerprint64(expression)
```

## Argument
<a name="r_FARMFINGERPRINT64-argument"></a>

 *expression*   
The input expression must be a `VARCHAR` or `VARBYTE` data type. 

## Return type
<a name="r_FARMFINGERPRINT64-return-type"></a>

The `farmFingerprint64` function returns a `BIGINT`. 

## Example
<a name="r_FARMFINGERPRINT64-example"></a>

The following example returns the `farmFingerprint64` value of `Amazon Redshift` that is input as a `VARCHAR` data type. 

```
SELECT farmFingerprint64('Amazon Redshift');
```

```
  
  farmfingerprint64
---------------------
 8085098817162212970
```

The following example returns the `farmFingerprint64` value of `Amazon Redshift` that is input as a `VARBYTE` data type. 

```
SELECT farmFingerprint64('Amazon Redshift'::varbyte);
```

```
  
  farmfingerprint64
---------------------
 8085098817162212970
```