Live ORACLE

DECLARE

  done  BOOLEAN;

BEGIN

  -- Each WHILE loop is equivalent

  done := false;

 

  WHILE done = false LOOP

    done := true;

  END LOOP;

 

  done := false;

 

  WHILE NOT (done = true) LOOP

    done := true;

  END LOOP;

 

  done := false;

 

  WHILE NOT done LOOP

    done := true;

  END LOOP;

END;

/

Using BOOLEAN Variables in Conditional Tests