Oracle 10g一个带参数的游标错误

Question

我不明白为什么我会得到这个错误。我有桌子，但代码示例工作不正常。这里有什么问题？

DECLARE 
    CURSOR c_cust(p_city VARCHAR2) IS 
     SELECT * FROM cust WHERE cust.city=p_city; 
    v_cust c_cust%ROWTYPE; 
    v_city c_cust%TYPE; 
BEGIN 
    v_city := 'London'; 
    OPEN c_cust (v_city); 
    LOOP 
     FETCH c_cust INTO v_cust; 
     EXIT WHEN (c_cust%NOTFOUND); 
     DBMS_OUTPUT.PUT_LINE (v_cust.cname || ' has ' || v_cust.rating); 
    END LOOP; 
    IF (c_cust%ISOPEN) THEN CLOSE c_cust; 
END; 

ORA-06550：线15，第4栏：PLS-00103： 出现符号 “;” 在需要下列之一时：如果

1. DECLARE
2. CURSOR c_cust（p_city VARCHAR2）IS
3. SELECT * FROM CUST WHERE cust.city = p_city; **

Answer 1

c_cust%ISOPEN应该在结束循环之前;

If .... then 
    .... 
end if; 

you miss end if;