title: Get X coordinate from SDO_GEOMETRY point
body: <p>I have a SDO_GEOMETRY point:</p>
  <pre><code> --yields SDO_GEOMETRY type, which contains an SDO_POINT
   select point from tbl 
  
    --yields a vertex_set_tye
   select SDO_UTIL.GETVERTICES(point) from tbl
  </code></pre>
  <p>How can I extract the X coordinate value using: <code>SDO_UTIL.GETVERTICES(point)</code>?</p>