哪些錯誤與此光標

Question

學習一下明確的遊標，並試圖創建我FRST一個：

SET SERVEROUTPUT ON 
DECLARE 
v_ename EMP.FIRST_NAME%TYPE; 
v_salary EMP.SALARY%TYPE; 
CURSOR c_emp IS SELECT first_name, salary FROM emp; 
BEGIN 
    OPEN c_emp; 
    FETCH c_emp INTO v_ename, v_salary; 
    DBMS_OUTPUT.PUT_LINE('Employee Details ' || v_ename || ' ' || v_salary) 

    FETCH c_emp INTO v_ename, v_salary; 
    DBMS_OUTPUT.PUT_LINE('Employee Details ' || v_ename || ' ' || v_salary) 

    CLOSE c_emp; 
END; 

，但它給了我：

FETCH c_emp INTO v_ename, v_salary; 
    * 
ERROR at line 10: 
ORA-06550: line 10, column 3: 
PLS-00103: Encountered the symbol "FETCH" when expecting one of the following: 
:= . (% ; 
The symbol ";" was substituted for "FETCH" to continue. 
ORA-06550: line 13, column 3: 
PLS-00103: Encountered the symbol "CLOSE" when expecting one of the following: 
:= . (% ; 

任何想法？

Answer 1

你忘了這行後面的分號（;）嗎？

Line #9: DBMS_OUTPUT.PUT_LINE('Employee Details ' || v_ename || ' ' || v_salary); 

嘗試添加它，看看錯誤是否仍然存在。

編輯：是的，它似乎缺少分號是問題。更新了您的查詢。嘗試這個。

SET SERVEROUTPUT ON 
DECLARE 
    v_ename EMP.FIRST_NAME%TYPE; 
    v_salary EMP.SALARY%TYPE; 
CURSOR c_emp IS SELECT first_name, salary FROM emp; 
BEGIN 
     OPEN c_emp; 
     FETCH c_emp INTO v_ename, v_salary; 
     DBMS_OUTPUT.PUT_LINE('Employee Details ' || v_ename || ' ' || v_salary); 
     FETCH c_emp INTO v_ename, v_salary; 
     DBMS_OUTPUT.PUT_LINE('Employee Details ' || v_ename || ' ' || v_salary); 
     CLOSE c_emp; 
END; 

Answer 2

我相信，在Oracle中，你可以在CURSOR <cursor> IS語句內不FETCH <cursor> - 也許你可以更巧妙地格式化你的代碼和/或提供更好的文本解釋（理想情況下都 - ！），以幫助我們神聖的[什麼髒話刪除]]你正在嘗試做什麼？