在 Google 表格中,如何将多列 headers 和数据转置为多行标签和数据的单列

In Google Sheets, how to transpose multiple column headers and data into a single column of multiple row labels and data

不确定用什么电子表格术语来表达这个意思。

如何打开这个:

+-----------+-----------+-----------+...
|Username   |First Name |Second Name|...
+-----------+-----------+-----------+...
|Uname1     |FName1     |SName1     |...
+-----------+-----------+-----------+...
|Uname2     |FName2     |SName2     |...
+-----------+-----------+-----------+...
|Uname3     |FName3     |SName3     |...
+-----------+-----------+-----------+...
:           :           :           :

进入这个?:

+-----------+-----------+
|Username   |Uname1     |
+-----------+-----------+
|First Name |FName1     |
+-----------+-----------+
|Second Name|SName1     |
+-----------+-----------+
|Username   |Uname2     |
+-----------+-----------+
|First Name |FName2     |
+-----------+-----------+
|Second Name|SName2     |
+-----------+-----------+
:           :           : 

省略号表示多个 columns/rows 继续。

我尝试通过谷歌搜索将列转置为行,但找不到问题的确切解决方案。

尝试:

=ARRAYFORMULA(SPLIT(TRANSPOSE(SPLIT(QUERY(TRANSPOSE(QUERY(TRANSPOSE(
 IF(A2:C<>"", "♦"&A1:C1&"♥"&A2:C, )),,999^99)),,999^99), "♦")), "♥"))