title: Ho to convert date "2019-12-06 04:21:13.0" using to_date in sql
body: <p>I am able to get date using <code>to_date('2019-12-06 04:21:13', 'YYYY-MM-DD HH24:MI:SS')</code>, but I have <code>"2019-12-06 04:21:13.0"</code> as an input date.</p>
  
  <p>I am also not sure what last 0 means,
  getting </p>
  
  <blockquote>
    <p>ORA-01861: literal does not match format string</p>
  </blockquote>
  
  <p>for the formats I have tried.</p>