title: Formatted SysDate in default value
body: <p>in Oracle, (with pl-sql developer) How can I use a formatted default value in a column? (like this: to_char(sysdate, 'HH:MM:SS') )</p>
  
  <p>I want create this coumns >></p>
  
  <p>name: f1</p>
  
  <p>type: date</p>
  
  <p>default: to_char(sysdate, 'HH:MM:SS')</p>