存儲過程編譯錯誤

Question

有人能幫助我在這，這是當我運行此腳本

ERROR at line 1: 
    ORA-00979: not a GROUP BY expression 
    ORA-06321: at "s3398293.P2", line 7 
    ORA-06321: at "s3398293.P2", line 18 
    ORA-06321: at line 1 

的代碼我收到錯誤消息：

create or replace 
    PROCEDURE p2(x NUMBER) 
    as 
     staff_info staff.bno%TYPE; 
     address_info varchar2(20); 

      CURSOR c1 IS 
       SELECT staff.bno , 
       branch.street || ' ' || branch.suburb || ' ' || branch.postcode 
       FROM deal , staff, contact , property , branch 
       where staff.peid = contact.peid 
       and contact.pno = property.pno 
       and property.pno = deal.pno 
       and staff.peid = branch.peid 
       group by staff.bno 
       HAVING x > sum(deal.price); 

    BEGIN 
     OPEN c1; 
     LOOP 
      FETCH c1 INTO staff_info,address_info ; 
      EXIT WHEN c1%notfound; 
      dbms_output.put_line('BRANCH# '||' '||'ADDRESS'); 
      dbms_output.put_line(staff_info ||' '|| address_info); 
     END LOOP; 
     close c1; 
    END; 
/

能

有人告訴我更多關於GROUP BY EXPRESSION的信息！ ？

Answer 1

改變光標聲明如下（EDIT 2！）：

  SELECT staff.bno staff_info, 
      branch.street || ' ' || branch.suburb || ' ' || branch.postcode address_info 
      FROM deal , staff, contact , property , branch 
      where staff.peid = contact.peid 
      and contact.pno = property.pno 
      and property.pno = deal.pno 
      and staff.peid = branch.peid 
      group by staff.bno , 
      branch.street || ' ' || branch.suburb || ' ' || branch.postcode 
      HAVING sum(deal.price) < x; 

編輯 - 按評論：

你LOOP應如下所示：

 FOR R IN C1 
    LOOP 
     staff_info := R.staff_info; 
     address_info := R.address_info; 
     dbms_output.put_line('BRANCH# '||' '||'ADDRESS'); 
     dbms_output.put_line(staff_info ||' '|| address_info); 
    END LOOP;