proc transpose wide to long- _label_ column

[Ronein]

Hello,

I am using proc transpose to change data structure from wide to long.

It is working 100%  and I also get a column called _LABEL_.

In this column (_LABEL_)  I get the label values .

In my real code which contain many columns (150 columns)  I perform also same proc transpose code  but I don't get the _Label_ column.

May anyone explain why it can happen?

As I said I run same code (proc tranpose) but dont get _label_ column

data have;
label month='MM-YYYY'  X='weight' y='height' Z='direction' R='revenue';
input month $ X Y Z R;
cards;
03-2023 10 20 30 40
04-2023 20 10 30 10
05-2023 40 30 20 20
;
Run;

proc transpose data=have out=want;
var  _all_;
run; 

[yabwon]

Does your "real" data have any variables with labels?

Run proc contents on your dataset an in the section variables see if there are any labels.

If there is no label in the data proc transpose won't produce _label_ variable.