title: how to get the max size used by a field in table
body: <p>I have a field which has been set to max size. How can i find the max size occupied by the field.</p>
  <p>For example if the records are for table TableA</p>
  <pre><code>FieldA
  
  123
  abcd
  1234567
  </code></pre>
  <p>I need to know which row occupied the most size and what the size is, how?</p>