如何在SQL查询中添加来自不同行的数据并将其显示为一行的列

Question

我是SQL查询字段中的新手，但可以进行一些查询。 我想在表行中添加相关数据，并在同一列中显示它们。 这是包含数据的表：

任何帮助将不胜感激。 提前致谢

Answer 1

如果实际上只有3个问题，并且假设表名为“学生”，则可以执行以下操作：

select studentid AS Student,
(select Questionpoints from Student where studentid = a.studentid and Questionid = 8) AS Qn1,
(select Questionpoints from Student where studentid = a.studentid and Questionid = 9) AS Qn2,
(select Questionpoints from Student where studentid = a.studentid and Questionid = 10) AS Qn3
from Student as a
group by studentid;