title: Remove duplicate rows based on specific columns
body: <p>I have a table that contains these columns:</p>
  <pre><code>ID (varchar)
  SETUP_ID (varchar)
  MENU (varchar)
  LABEL (varchar)
  </code></pre>
  <p>The thing I want to achieve is to remove all duplicates from the table based on two columns <code>(SETUP_ID, MENU)</code>.</p>
  <p>Table I have:</p>
  <pre><code>id  |  setup_id  |  menu  |  label  |
  -------------------------------------
  1   |    10      |  main  |  txt    |
  2   |    10      |  main  |  txt    |
  3   |    11      | second |  txt    |
  4   |    11      | second |  txt    |
  5   |    12      | third  |  txt    |
  </code></pre>
  <p>Table I want:</p>
  <pre><code>id  |  setup_id  |  menu  |  label  |
  -------------------------------------
  1   |    10      |  main  |  txt    |
  3   |    11      | second |  txt    |
  5   |    12      | third  |  txt    |
  </code></pre>