PL/SQL cursor traversing records in % rowtype

From http://tshfang.nipei.com/

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How to traverse all records without entering a specific value for each query. Then we use ORACLE cursor
Cursors are classified into static cursors and referenced cursors (dynamic cursors)
Static cursor: The result set defined by the user (implicit cursor and display cursor) remains unchanged.
Reference cursor: result set changes
Implicit cursor: an implicit cursor is automatically used for DML operations. We can use an implicit cursor to determine the SQL statement execution result.
Automatically declare and process. In the session area, enable the cursor. It is automatically disabled after processing. Returns a single row query.
Implicit cursor usage:
Declare
% Notfound -- the execution row is not found.
% Found -- find the execution line
% Rowcount -- number of rows affected by the cursor
% Isopen -- whether the current cursor is open
Let's take a look at the previous article through the cursor.ArticleExample
Traverse data through loops:
1. loop when Loop

 Declare  
  Cursor  Mycur  Is     Select     *    From  Hr.jobs;
Onerow hr.jobs  %  Rowtype;
  Begin  
  Open  Mycur;
Loop
  Fetch  Mycur  Into  Onerow;
Dbms_output.put_line (onerow. job_id  |  '   '     |  Onerow. job_title );
  Exit     When  Mycur  %  Notfound;
  End  Loop;
  Close  Mycur;
  End  ; 

2. While Loop

 Declare 
  Cursor  Mycur  Is     Select     *     From  Hr.jobs;
Onerow hr.jobs  %  Rowtype;
  Begin  
  Open  Mycur;
 Fetch  Mycur  Into  Onerow;
  While  (Mycur  %  Found)
Loop
Dbms_output.put_line (onerow. job_id  |  '    '     |  Onerow. job_title );
  Fetch Mycur  Into  Onerow;
  End  Loop;
  Close  Mycur;
  End  ; 

3. For Loop

 Declare  
  Cursor  Mycur  Is     Select    *     From  Hr.jobs;
Onerow hr.jobs  %  Rowtype;
  Begin  
  For  Onerow  In  Mycur Loop
Dbms_output.put_line (onerow. job_id  |  '    '    |  Onerow. job_title );
  End  Loop;
  End  ; 

The result is as follows:
Ad_pres President
Ad_vp administration vice president
Ad_asst Administration Assistant
Fi_mgr Finance Manager
Fi_account accountant
Ac_mgr Accounting Manager
Ac_account public accountant
Sa_man Sales Manager
Sa_rep Sales Representative
Pu_man Purchasing Manager
Pu_clerk purchasing clerk
St_man Stock Manager
St_clerstock clerk
Sh_clerk shipping clerk
It_prog programmer
Mk_man Marketing Manager
Mk_rep marketing representative
Hr_rep human resources representative
Pr_rep Public Relations Representative

Author: tshfang

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If "exit when" is not used in the first method, put an if statement in the loop to put exit.