title: Sub querying data over a SQL query
body: <p>I've the following query,
  Query the Western Longitude (LONG_W) for the largest Northern Latitude (LAT_N) in STATION that is less than 137.2345
  137.2345. Round your answer to 4 decimal places.
  The schema for the table STATION is id, city, state, lat_N, long_w</p>
  
  <p>This is my code,</p>
  
  <pre><code>SELECT LONG_W 
  FROM STATION 
  WHERE LAT_N IN
  (SELECT ROUND(MAX(LAT_N), 4) FROM STATION WHERE LAT_N &lt; 137.2345);
  </code></pre>
  
  <p>This doesn't work, what am I doing wrong here.</p>