也许我在这里向Excel（Mac OSX）提出太多要求。 很抱歉，标题可能含糊不清，通过示例很容易解释： 我们有一个像
这样的表格+----------+---------+---------+----------+
| username | course | group | role |
+----------+---------+---------+----------+
| A | music | X | student |
| A | math | Y | student |
| A | spanish | Z | student |
| B | music | X | student |
| B | math | Y | teacher |
+----------+---------+---------+----------+
我想按用户名进行分组，但有点像“扁平化”。分组，创建一个如下所示的表：
+----------+---------+----------+---------+---------+--------+---------+---------+--------+---------+
| username | course1 | group1 | role1 | course2 | group2 | role2 | course3 | group3 | role3 |
+----------+---------+----------+---------+---------+--------+---------+---------+--------+---------+
| A | music | X | student | math | Y | student | spanish | Z | student |
| B | music | X | student | math | Y | teacher | | | |
+----------+---------+----------+---------+---------+--------+---------+---------+--------+---------+
无论我在Excel中做什么，都必须能够动态命名和创建这些列 - 即一些用户将拥有最多的课程3＆＃39;其他人，直到＆＃39; course12＆＃39;
任何帮助都非常感谢：）