title: Delete values from different columns depending on a value from a specific column
body: <p>I have a double variable with 3 columns. Sometimes, in the second column I obtain the value zero. In case it happens I want to completely erase that line. For instance:</p>
  
  <pre><code>12346 67 89
  
  1245 0 765
  
  56 0 99
  
  19862 8 675
  </code></pre>
  
  <p>What I would like to get:</p>
  
  <pre><code>12346 67 89
  
  19862 8 675
  </code></pre>
  
  <p>Thanks in advance for your help.</p>