为什么我收到以下错误，请告诉我代码中的错误。 ORA-06511：PL / SQL：游标已经打开
代码：
create or replace procedure student_info IS
c_id student_details.student_id%type ;
c_name student_details.student_name%type;
c_status student_details.student_status%type;
cursor stu_c1 IS
select * from student_details
where student_status='Absent';
begin
open stu_c1;
Fetch stu_c1 into c_id,c_name,c_status ;
for rec in stu_c1 loop
insert into student_data values (c_status,c_id,c_name);
commit;
end loop;
CLOSE stu_c1;
end;
答案 0 :(得分：1)
如果您使用import React, {Component} from 'react';
import 'react-big-calendar/lib/css/react-big-calendar.css'
import BigCalendar from 'react-big-calendar';
import moment from 'moment';
import 'moment/locale/pl';
class NewCalendar extends Component {
constructor(props, context) {
super(props, context);
BigCalendar.momentLocalizer(moment);
}
render() {
return (
<div {...this.props}>
<BigCalendar
messages={{next: "Następny", previous: "Poprzedni", today: "Dzisiaj", month: "Miesiąc", week: "Tydzień"}}
culture='pl-PL'
timeslots={1}
events={[]}
views={['month', 'week', 'day']}
min={new Date('2017, 1, 7, 08:00')}
max={new Date('2017, 1, 7, 20:00')}
/>
</div>
);
}
}
export default NewCalendar;
循环显式游标，则不需要FOR。
open/fetch/close/handle NOTFOUND或者，您可以打开，抓取，关闭，处理...
begin
--open stu_c1; -- extra, not needed
--Fetch stu_c1 into c_id,c_name,c_status ; -- extra, not needed
for rec in stu_c1 loop -- that's enough
insert into student_data values (c_status,c_id,c_name);
....
end loop;
--CLOSE stu_c1; -- not needed
，但不能使用NOTFOUND。