how to copy a column of a table (with content)

[Uwe Brauer]

Hi 

I sometime have to deal with table that contains large columns and I
want to copy that columns and modify them a bit.

So I usually just insert an empty column and use kill-rectangle and 
yank-rectangle.

I am wondering, there seems no 
org-table-kill-this-column and org-table-yank-this-column.

I found 

https://emacs.stackexchange.com/questions/28270/how-to-select-and-copy-a-column-of-an-org-table-without-rectangle-selection#:~:text=Just%20mark%20the%20beginning%20of,table%2Dpaste%2Drectangle%20).

But it did not work for me.

Any ideas?

Regards

Uwe Brauer