MSSQL: Select rows with more than 2 occurrences in another table

Question

Basically I need to get a list of CampaignTitles that have more than 2 occurrences in StaffOnGrade and list the CampaignTitle, StaffNo who have a Grade rating higher then 2<

Answer 1

SELECT campaigntitle, StaffNo, COUNT (CAMPAIGNTITLE) As [count]
  FROM WORKSON
 WHERE StaffNo IN
       (SELECT STAFFNO
          FROM STAFFONGRADE
         WHERE GRADE > 2)
 GROUP BY CAMPAIGNTITLE
HAVING COUNT(CAMPAIGNTITLE) >2