title: PL SQL Values of a variable need to be cleared or reset to default
body: <p>Hi I've a variable as follows,</p>
  
  <p><code>T_ID_LIGNE TBL_ID_LIGNE;</code></p>
  
  <p>Later I'm loading some data into this variable, performing operations with the data in it.
  Now I need to clear the data in it and load fresh data. I don't want to use any extra variable.</p>
  
  <p>Is is possible?</p>
  
  <p>Please help </p>
  
  <p>Thanks.</p>