title: Group by Concat Teradata
body: <p>I have a problem with a table, I would like to concat a string field using a group by. I have this situation here:</p>
  
  <pre><code>USER | TEXT
  A    | 'hello'
  A    | 'by'
  B    | 'hi'
  B    | '9'
  B    | 'city'
  </code></pre>
  
  <p>I would like to obtain this result:</p>
  
  <pre><code>USER | TEXT
  A    | 'hello by'
  B    | 'hi 9 city'
  </code></pre>