SELECT T2.Author ,  COUNT(DISTINCT T1.workshop_id) FROM acceptance AS T1 JOIN submission AS T2 ON T1.Submission_ID  =  T2.Submission_ID GROUP BY T2.Author
Show each author and the number of workshops they submitted to.
SELECT T2.Author , COUNT ( DISTINCT T1.workshop_id ) FROM acceptance AS T1 JOIN submission AS T2 ON T1.Submission_ID = T2.Submission_ID GROUP BY T2.Author
select t2 . author , count ( distinct t1 . workshop_id ) from acceptance as t1 join submission as t2 on t1 . submission_id = t2 . submission_id group by t2 . author
Show each author and the number of workshops they submitted to .