SELECT document_type_code FROM documents GROUP BY document_type_code HAVING count(*)  >  4
Find the types of documents with more than 4 documents.
SELECT document_type_code FROM documents GROUP BY document_type_code HAVING count ( * ) > 4
select document_type_code from documents group by document_type_code having count ( * ) > value
Find the types of documents with more than 4 documents .