如何在SQL中优化/替换游标？

Question

我正在使用光标，并想知道这是否可以废除和优化？

Answer 1

SELECT s.StudentId, COUNT(*) AS CreationCount 
FROM Student s
INNER JOIN CreationHist c
    ON c.StudentId = s.StudentId
WHERE c.CreateDate = '05/02/2011'
GROUP BY s.StudentId