If I use this simple fetch function under full view:

{def $related_solution = fetch( 'content', 'reverse_related_objects', hash( 'object_id', $node.contentobject_id, 'attribute_identifier', '428' ) )}

I get a sql error:

Query error (1064): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND contentclassattribute_id=428 ( relation_type & 8 ) <> 0
' at line 19. Query: SELECT
ezcontentclass.serialized_name_list AS class_serialized_name_list,
ezcontentclass.identifier as contentclass_identifier,
ezcontentclass.is_container as is_container,
ezcontentobject.*, ezcontentobject_name.name as name, ezcontentobject_name.real_translation

FROM
ezcontentclass,
ezcontentobject,
ezcontentobject_link,
ezcontentobject_name

WHERE
ezcontentclass.id=ezcontentobject.contentclass_id AND
ezcontentclass.version=0 AND
ezcontentobject.status=1 AND

AND contentclassattribute_id=428 ( relation_type & 8 ) <> 0
AND ezcontentobject.id=ezcontentobject_link.from_contentobject_id AND
ezcontentobject_link.to_contentobject_id=265 AND
ezcontentobject_link.from_contentobject_version=ezcontentobject.current_version
AND
ezcontentobject.id = ezcontentobject_name.contentobject_id AND
ezcontentobject.current_version = ezcontentobject_name.content_version AND

( ezcontentobject_name.language_id & ezcontentobject.language_mask > 0 AND
( ( ezcontentobject.language_mask - ( ezcontentobject.language_mask & ezcontentobject_name.language_id ) ) & 1 )
+ ( ( ( ezcontentobject.language_mask - ( ezcontentobject.language_mask & ezcontentobject_name.language_id ) ) & 2 ) )
<
( ezcontentobject_name.language_id & 1 )
+ ( ( ezcontentobject_name.language_id & 2 ) )
)