Example:

eZOracleDB:
Error (920): ORA-00920: invalid relational operator

Failed query at offset 262:
SELECT count AS count
FROM ezcontentobject_link
WHERE from_contentobject_id=78297 AND
from_contentobject_version=2 AND
to_contentobject_id=78308 AND
( relation_type & 7 ) != 0 AND
contentclassattribute_id=0 AND
op_code='0'

Start of error:
& 7 ) != 0 AND
contentclassattribute_id=0 AND
op_code='0'

Furthermore there are some "AS" elements that could perhaps be removed.