Given that the
descriptionfield is stored as a LOB, you need to use thelo_get()function to retrieve the content referenced by the OID. However, if you want the content to be interpreted as text rather than binary, you must use PostgreSQL'sconvert_from()function to convert it from binary (BYTEA) to text (TEXT), using the appropriate encoding (usuallyUTF8).
SELECT convert_from(lo_get(public.incidence.description), 'UTF8') AS desc_data
FROM public.incidence;