title: ORACLE convert number to string
body: <p>Need some help in converting numbers:</p>
  
  <pre><code>select to_char(a, '99D99')
         , to_char(a, '90D99')
  from
  (
  select 50 a from dual
  union
  select 50.57 from dual
  union
  select 5.57 from dual
  union
  select 0.35 from dual
  union
  select 0.4 from dual
  </code></pre>
  
  <p>Will result in:</p>
  
  <pre><code>1      ,35    0,35
  2      ,40    0,40
  3     5,57    5,57
  4    50,00   50,00
  5    50,57   50,57
  </code></pre>
  
  <p>But how to make my output like:</p>
  
  <ol>
  <li>0,35    </li>
  <li>0,4    </li>
  <li>5,57    </li>
  <li>50  </li>
  <li>50,57</li>
  </ol>
  
  <p>I need <code>0</code> before comma, but not after.</p>