Uploading data from an external table with a where clause

Question

Hi,
How do insert data from an external table in to a table already created in the database where person_id = person-_id on the external table?
Example:
External table
XX_EXTERNAL_TBL (Person_id, emp_number, emp_name)
Internal table
XX_SQL_LOADER_TEST (Person_id, emp_number, emp_name)
and person id already exists on the internal table (only want the last to columns to import where the person ids are the same)
Thanks

Answer 1

INSERT
  INTO XX_SQL_LOADER_TEST
  SELECT  *
    FROM  XX_EXTERNAL_TBL
    WHERE Person_id IN (
                        SELECT  Person_id
                          FROM  XX_SQL_LOADER_TEST
/SY.