PLS-00103：出現符號 「FETCH」 期待當followingg

Question

創建如下面的過程的一個：

錯誤（33,4）：

create or replace 
    PROCEDURE TEST AS 
    BEGIN 
    DECLARE 
    c_service process_state.service%type; 
    c_tr_source process_state.tr_source%type; 

    CURSOR c_process_state is 
     SELECT service, tr_source FROM process_state; 

      OPEN c_process_state; 
      LOOP 
      FETCH c_process_state into c_service, c_tr_source; 
      insert into process_state_archive values (c_service, c_tr_source); 
      commit; 
      EXIT WHEN c_process_state%notfound; 
      END LOOP; 
    CLOSE c_process_state; 
    END TEST; 

編譯我跑進一些錯誤後：PLS-00103：期待以下某種情況時遇到符號「FETCH」：常量異常表long double ref char time timestamp間隔日期

錯誤（44,4）：PLS-00103：遇到符號「CLOSE」當期待以下其中一種情況時：end not pragma final instantiable volgorde overridi ng靜態成員構造函數圖

任何人都可以請解釋一下這個問題嗎？我是初學者，學習SQL。

Answer 1

1）你應該申報光標開始之前，而不是之後而存在時，應立即提取

create or replace 
    PROCEDURE TEST AS 

    c_service process_state.service%type; 
    c_tr_source process_state.tr_source%type; 
CURSOR c_process_state is 
     SELECT service, tr_source FROM process_state; 
    BEGIN 

      OPEN c_process_state; 
      LOOP 
      FETCH c_process_state into c_service, c_tr_source; 
      EXIT WHEN c_process_state%notfound; 
      insert into process_state_archive values (c_service, c_tr_source); 
      commit; 

      END LOOP; 
    CLOSE c_process_state; 
    END TEST; 

2後），您的任務似乎可以在一條語句，而不是大量的用遊標代碼來解決：

INSERT INTO process_state_archive select service, tr_source FROM process_state;