Example: Function Mapping Definition Using EXTERNAL SECURITY Clause for JSON Data Files - Teradata Vantage

This statement defines the function mapping READ_NOS_json_fm for the READ_NOS table operator to query JSON data files. The function mapping includes the authorization DefAuth and a return type of NOSREAD_RECORD.

CREATE FUNCTION MAPPING READ_NOS_json_fm
  FOR READ_NOS
  EXTERNAL SECURITY DEFINER TRUSTED DefAuth
  USING
    LOCATION('/S3/td-usgs-public.s3.amazonaws.com/JSONDATA'),
  RETURNTYPE('NOSREAD_RECORD') ;