title: Selecting a row with the greater serial number
body: <p>so I have a sql table which includes rows with serial numbers. Now I need to select only one row, and it should be the one with the largest serial number.</p>
  
  <p>Ex</p>
  
  <pre><code>17 Cool Dude
  18 Riha
  </code></pre>
  
  <p>I need to select the row "18 Riha" ....how do i do that?</p>
  
  <p>Thanks.</p>