SELECT avg(access_count) FROM documents GROUP BY document_structure_code ORDER BY count(*) ASC LIMIT 1
Find the average access count of documents with the least popular structure.
SELECT avg ( access_count ) FROM documents GROUP BY document_structure_code ORDER BY count ( * ) ASC LIMIT 1
select avg ( access_count ) from documents group by document_structure_code order by count ( * ) asc limit value
Find the average access count of documents with the least popular structure .