title: How to combine multiple rows into one row when using SQL statement
body: <p>How can I combine multiple rows into one row?</p>
  
  <p>Example:</p>
  
  <pre><code>1 infill  20
  2 test2   30
  3 test3   40
  </code></pre>
  
  <p>I want to combine one row like this:</p>
  
  <p><code>infill 20, test2 30, test4 40</code>.</p>