title: How to convert decimal to date?
body: <p>I have a problem. I have a field START_VALUE where the data type is decimal. I want to convert Decimal to Date.</p>
  
  <p>The data type START_VALUE is Decimal.The data of START_VALUE  is :</p>
  
  <p><code>START_VALUE
  |=========|
  | 240368 |
  | 198448 |
  | 197396 |
  | 126743 |</code> </p>
  
  <p>I want to convert to Datetime and what i want to expect is like 'yyyy-mm-dd 00:00:00.000'</p>
  
  <p>I don't know if the value is Julian date or else. Please help me to find the right select query.
  Thanks. </p>