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Cursor と fetch を使用した LOOP ステートメントがあり、それは機能しますが、「FOR LOOP」が必要です。

DECLARE
   emp_rec employees%ROWTYPE;
   CURSOR Cur_emp IS 
     SELECT * 
       FROM employees 
      order by employees.last_name asc; 
BEGIN
   OPEN Cur_emp;
   LOOP
      FETCH Cur_emp INTO emp_rec; 
      exit when Cur_emp%notfound;
      dbms_output.put_line(‘Employee Name–>’|| emp_rec.LAST_NAME);
   END LOOP;
   CLOSE Cur_emp;  
END;

好きになりたい:

DECLARE
   emp_rec employees%ROWTYPE;
   CURSOR Cur_emp IS 
     SELECT * 
       FROM employees 
      order by employees.last_name asc; 
BEGIN
   FOR item IN Cur_emp
   LOOP
     FETCH Cur_emp INTO emp_rec;
     exit when Cur_emp%notfound;
     dbms_output.put_line(‘Employee Name–>’|| emp_rec.LAST_NAME);
   END LOOP;
END;
/

これは機能しません。FETCH Cur_emp INTO emp_rec INVALID CURSOR ORA-01001

4

1 に答える 1

1

FETCHandを削除しEXIT WHEN、次のように emp_rec 参照を item に置き換えます。

DECLARE
CURSOR Cur_emp IS SELECT * FROM employees order by employees.last_name asc; 
BEGIN
FOR item IN Cur_emp
LOOP
dbms_output.put_line(‘Employee Name–>’|| item.LAST_NAME);
END LOOP;
END;
/
于 2013-07-27T15:07:45.020 に答える