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/). 

# JSON\$1SERIALIZE\$1TO\$1VARBYTE function
<a name="JSON_SERIALIZE_TO_VARBYTE"></a>

The JSON\$1SERIALIZE\$1TO\$1VARBYTE function converts a `SUPER` value to a JSON string similar to JSON\$1SERIALIZE(), but stored in a `VARBYTE` value instead.

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

```
JSON_SERIALIZE_TO_VARBYTE(super_expression)
```

## Arguments
<a name="JSON_SERIALIZE_TO_VARBYTE-arguments"></a>

 *super\$1expression*  
A `SUPER` expression or column.

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

`VARBYTE`

## Examples
<a name="JSON_SERIALIZE_TO_VARBYTE-examples"></a>

To serialize a `SUPER` value and returns the result in `VARBYTE` format, use the following example.

```
SELECT JSON_SERIALIZE_TO_VARBYTE(JSON_PARSE('[10001,10002,"abc"]'));

+----------------------------------------+
|       json_serialize_to_varbyte        |
+----------------------------------------+
| 5b31303030312c31303030322c22616263225d |
+----------------------------------------+
```

To serialize a `SUPER` value and casts the result to `VARCHAR` format, use the following example. For more information, see [CAST function](r_CAST_function.md).

```
SELECT CAST((JSON_SERIALIZE_TO_VARBYTE(JSON_PARSE('[10001,10002,"abc"]'))) AS VARCHAR);

+---------------------------+
| json_serialize_to_varbyte |
+---------------------------+
| [10001,10002,"abc"]       |
+---------------------------+
```