插入 where 子句

Question

INSERT INTO LOOPT2 (TOKEN_STATUS) 
      VALUES (1) where Token_NO = :Token_No;

我知道这不适用于哪里 claus 它是一个详细的块请帮助我我所做的是这但对我不起作用请帮助我

DECLARE 
  TOKEN_NO NUMBER;
  TOKEN_STATUS1 NUMBER;
BEGIN
  GO_BLOCK('TOKEN_REC2');
  FIRST_RECORD; 

 LOOP
  BEGIN
     SELECT SR_NO, TOKEN_STATUS 
       INTO TOKEN_NO, TOKEN_STATUS1 
       FROM LOOPT2 
      WHERE TOKEN_STATUS = :TOKEN_NO 
        AND V_ID=1;

   EXCEPTION
   WHEN NO_DATA_FOUND THEN
    INSERT INTO LOOPT2 (TOKEN_STATUS) 
      VALUES (1);
  END;

    EXIT WHEN :SYSTEM.LAST_RECORD = 'TRUE';
    NEXT_RECORD;
 END LOOP;  

  COMMIT;
END;

Answer 1

您似乎需要if 声明，例如：

..
EXCEPTION
  WHEN NO_DATA_FOUND THEN
   IF ( TOKEN_NO = :TOKEN_NO ) THEN
    INSERT INTO LOOPT2 (TOKEN_STATUS) 
      VALUES (1);
   END IF;
  END;
..

或dual 表：

..
EXCEPTION
  WHEN NO_DATA_FOUND THEN
    INSERT INTO LOOPT2 (TOKEN_STATUS) 
    SELECT 1 FROM DUAL WHERE TOKEN_NO = :TOKEN_NO;
  END;
..