하나의 테이블 필드에서 트리거가 모든 테이블 필드에 적용됩니다.

Question

테이블의 일부 필드에 대한 트리거가 있습니다. 그러나 어떤 이유로 다른 필드가 변경되면 (트리거에서 정의되지 않은 경우) 여전히 트리거됩니다.

CREATE OR REPLACE TRIGGER INTEGRATION_EMPLOYMENT 
    AFTER UPDATE OF start_day_of_employment, end_of_employment ON hr_employment_data 
    FOR EACH ROW 
    DECLARE 
    BEGIN 
     IF UPDATING THEN 
      MERGE INTO ad_integration intg USING dual ON (intg.user_id = :NEW.user_id AND intg.integrated = 'NO') 
      WHEN MATCHED THEN 
       UPDATE SET 
         intg.start_day_of_employment = decode(:NEW.start_day_of_employment, NULL, ' ', :NEW.start_day_of_employment), 
         intg.end_of_employment = decode(:NEW.end_of_employment, NULL, ' ', :NEW.end_of_employment), 
         intg.manager_status = :NEW.manager_status, 
         intg.pid = (SELECT pid FROM arc.user_info WHERE user_id = :NEW.user_id), 
         intg.network_access_start_date = (SELECT network_access_start_date FROM hr_extension_data WHERE user_id = :NEW.user_id) 
      WHEN NOT MATCHED THEN 
       INSERT (intg.user_id, intg.start_day_of_employment, intg.end_of_employment, intg.manager_status, intg.pid, intg.network_access_start_date 
       VALUES (:NEW.user_id, :NEW.start_day_of_employment, :NEW.end_of_employment, :NEW.manager_status, (SELECT pid FROM arc.user_info WHERE user_id = :NEW.user_id), (SELECT network_access_start_date FROM hr_extension_data WHERE user_id = :NEW.user_id)); 
END IF; 

END HR_ADINTEGRATION_EMPLOYMENT; 

DUAL을 사용했기 때문에 발생 했나요?

건배! :-)

Answer 1

당신은을 구체적으로 필드를 변경하면, 다음 그냥 빨리가 비교합니까 같이 구조를 떠나지 만 트리거를 처리 할 경우 (새 코드 라인 7, 8) : 아마

CREATE OR REPLACE TRIGGER INTEGRATION_EMPLOYMENT 
AFTER UPDATE OF start_day_of_employment, end_of_employment ON hr_employment_data 
FOR EACH ROW 
DECLARE 
BEGIN 
    IF UPDATING 
     AND (:NEW.start_day_of_employment <> :OLD.start_day_of_employment 
     OR :NEW.end_of_employment <> :OLD.end_of_employment) THEN 
     MERGE INTO ad_integration intg USING dual ON (intg.user_id = :NEW.user_id AND intg.integrated = 'NO') 
     WHEN MATCHED THEN 
      UPDATE SET 
        intg.start_day_of_employment = decode(:NEW.start_day_of_employment, NULL, ' ', :NEW.start_day_of_employment), 
        intg.end_of_employment = decode(:NEW.end_of_employment, NULL, ' ', :NEW.end_of_employment), 
        intg.manager_status = :NEW.manager_status, 
        intg.pid = (SELECT pid FROM arc.user_info WHERE user_id = :NEW.user_id), 
        intg.network_access_start_date = (SELECT network_access_start_date FROM hr_extension_data WHERE user_id = :NEW.user_id) 
     WHEN NOT MATCHED THEN 
      INSERT (intg.user_id, intg.start_day_of_employment, intg.end_of_employment, intg.manager_status, intg.pid, intg.network_access_start_date 
      VALUES (:NEW.user_id, :NEW.start_day_of_employment, :NEW.end_of_employment, :NEW.manager_status, (SELECT pid FROM arc.user_info WHERE user_id = :NEW.user_id), (SELECT network_access_start_date FROM hr_extension_data WHERE user_id = :NEW.user_id)); 
END IF; 

END HR_ADINTEGRATION_EMPLOYMENT;