To process unstructured data in Snowflake, external functions can be used.

External Functions: These allow you to call external services and processing engines from within Snowflake SQL. External functions can be used to handle complex processing tasks that are not natively supported by Snowflake, including those involving unstructured data.

Implementation: You define an external function in Snowflake that points to an external processing service (e.g., AWS Lambda, Google Cloud Functions).