SQL 查询 returns 需要的数据，但是程序没有

Question

我需要创建一个过程，returns 来自两个表的条目列表。这是该过程的代码：

create or replace PROCEDURE goods_to_transfer
    IS
     begin
        for rec in (select sales.good_id, sales.good_count, goods.priority 
                    FROM goods,sales 
                    where sales.good_id=goods.id and sales.delivered='YES');
 
    loop
        
    dbms_output.put_line( 'GOOD ID' || rec.good_id);
    dbms_output.put_line( 'GOOD COUNT' || rec.good_count);
    dbms_output.put_line( 'PRIORITY' || rec.good_priority);

   end loop;
     end goods_to_transfer;

执行结束，出现以下错误：

ORA-01403: no data found ORA-06512: in "C##XSENIA.GOODS_TO_TRANSFER", line 7 ORA-06512: in line 2

同一个查询returns所有需要的数据：

select sales.good_id, sales.good_count, goods.priority FROM goods,sales 
        where sales.good_id=goods.id and sales.delivered='YES'

我想知道是否有人可以告诉我，我做错了什么。谢谢！

Answer 1

尝试删除；在请求结束时

for rec in (select sales.good_id, sales.good_count, goods.priority 
                    FROM goods,sales 
                    where sales.good_id=goods.id and sales.delivered='YES')

SQL 查询 returns 需要的数据，但是程序没有

SQL query returns necessary data, but the procedure doesn't

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