SELECT Year_of_Founded FROM orchestra AS T1 JOIN performance AS T2 ON T1.Orchestra_ID  =  T2.Orchestra_ID GROUP BY T2.Orchestra_ID HAVING COUNT(*)  >  1
What are years of founding for orchestras that have had more than a single performance?
SELECT Year_of_Founded FROM orchestra AS T1 JOIN performance AS T2 ON T1.Orchestra_ID = T2.Orchestra_ID GROUP BY T2.Orchestra_ID HAVING COUNT ( * ) > 1
select year_of_founded from orchestra as t1 join performance as t2 on t1 . orchestra_id = t2 . orchestra_id group by t2 . orchestra_id having count ( * ) > value
What are years of founding for orchestras that have had more than a single performance ?