title: How can I embed a copy of a table's column as a table within a new column of the original table?
body: <p>If I have a table like this:</p>
  
  <p><a href="https://i.stack.imgur.com/OO4Yl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OO4Yl.png" alt="enter image description here"></a></p>
  
  <p>How can I add an embedded copy of <em>Column2</em> in place of the Error in <em>Custom</em>? I would want the exact same embedded copy of <em>Column2</em> in each row of <em>Custom</em>.</p>
  
  <p>I tried using <code>Table.FromColumns({{[Column2]}})</code>
  and <code>Table.FromList({[Column2]})</code> , but they both only embed a one row table with only the current row's value from <em>Column2</em>.</p>
  
  <p>I want the embedded table on each row of <em>Custom</em> to have all of <em>Column2</em>'s values, like:</p>
  
  <p><a href="https://i.stack.imgur.com/vONLN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vONLN.png" alt="enter image description here"></a></p>