declare 
  -- Local variables here 
  CURSOR C_EVENT(ROW_NUM NUMBER DEFAULT 3) is  
  (select t.name from users t where rownum <ROW_NUM); 
  temp users.name%TYPE;
begin 
  -- for 遍历游标 
  for temp in C_EVENT(ROW_NUM=>2) 
  Loop 
      dbms_output.put_line('名称：'|| temp.name); 
      dbms_output.put_line('index: '||C_EVENT%ROWCOUNT); 
  End Loop; 
  
  dbms_output.put_line('------分割线------'); 
  
  --while 遍历游标 
  OPEN C_EVENT(ROW_NUM=>3);--打开游标 
  FETCH C_EVENT into temp; --取值 
  while C_EVENT%found  
  Loop 
    dbms_output.put_line('名称：'||temp); --打印 
    dbms_output.put_line('index: '||C_EVENT%ROWCOUNT); 
    FETCH C_EVENT into temp; --取值 
  End Loop; 
  CLOSE C_EVENT; 
  
  dbms_output.put_line('------分割线------'); 
  --loog 遍历游标 
  OPEN C_EVENT(ROW_NUM=>4);--打开游标 
  Loop 
      FETCH C_EVENT into temp; --取值 
      Exit when C_EVENT%NOTFOUND; 
      dbms_output.put_line('名称：'||temp); --打印 
      dbms_output.put_line('index: '||C_EVENT%ROWCOUNT); 
  End Loop; 
  CLOSE C_EVENT; 
end; 

-------while..and...
declare 
  -- Local variables here 
  CURSOR C_EVENT(ROW_NUM NUMBER DEFAULT 3) is  
  (select t.name,t.status from users t where rownum <ROW_NUM); 
  temp users.name%TYPE;pp users.status%type; v_num int;
begin  
  --while 遍历游标 
  OPEN C_EVENT(ROW_NUM=>10);--打开游标
  FETCH C_EVENT into temp,pp; --取值 
  v_num:=1;
  while C_EVENT%found and v_num<=9  
  Loop 
    dbms_output.put_line('名称'||temp||'状态'||pp||'v_num'||v_num); --打印 
	dbms_output.put_line('index: '||C_EVENT%ROWCOUNT);
    FETCH C_EVENT into temp,pp; --取值 
    v_num:=v_num+1;
  End Loop; 
  CLOSE C_EVENT;  
  
end;