尝试创建一个触发器来跟踪用户对表所做的更改但不断收到错误 ORA-24344：编译错误成功答案

【问题标题】：Trying to create a trigger that tracks users changes they make on a table but keep getting error ORA-24344: success with compilation error尝试创建一个触发器来跟踪用户对表所做的更改但不断收到错误 ORA-24344：编译错误成功
【发布时间】：2018-02-25 22:01:59
【问题描述】：

CREATE OR REPLACE TRIGGER placement_audit_trigger 
BEFORE INSERT OR DELETE OR UPDATE ON LDS_PLACEMENT
FOR EACH ROW
ENABLE
DECLARE
v_user varchar(30);
v_date varchar(30);
BEGIN
SELECT user, TO_CHAR(sysdate, 'DD/MON/YYYY HH24:MI:SS') INTO v_user, v_date FROM dual;
IF INSERTING THEN
INSERT INTO placement_audit (new_name, old_name, user_name, entry_date, operation)
VALUES(:NEW.PLACEMENT_ID, NULL, v_user, v_date, 'Insert');
ELSIF DELETING THEN 
INSERT INTO placement_audit (new_name, old_name, user_name, entry_date, operation)
VALUE (NULL,:OLD.PLACEMENT_ID, v_user, v_date, 'Delete');
ELSIF UPDATING THEN 
INSERT INTO placement_audit (new_name, old_name, user_name, entry_date, operation)
VALUES(:NEW.PLACEMENT_ID, :OLD.PLACEMENT_ID, v_user, v_date,'Update');
END IF; 
END;

尝试创建触发器，以跟踪用户在表中所做的更改但保留 ORA-24344：编译错误成功我已经研究并尝试解决问题，谁能告诉我我哪里出错了或指出我正确的方向。

【问题讨论】：

请输入“显示错误；”在收到错误后触发用户下（如果您使用的是 SQLPlus 命令行）或从 user_errors 视图中选择以获取更详细的消息。
您到底为什么将 sysdate 存储并插入为 VARCHAR2？
你可以简单地写像INSERT INTO placement_audit (new_name, old_name, user_name, entry_date, operation) VALUES(:NEW.PLACEMENT_ID, :OLD.PLACEMENT_ID, USER, SYSDATE,'Update');这样的插入 - 不需要select ... into ... from dual;
@WernfriedDomscheit 如何定义进行更改的用户，请阅读问题
@WernfriedDomscheit 是对的 - 将 v_date varchar(30) 更改为 v_date 日期。

标签： sql oracle

【解决方案1】：

你有错别字，一定是

INSERT INTO placement_audit (new_name, old_name, user_name, entry_date, operation)
VALUES (NULL,:OLD.PLACEMENT_ID, v_user, v_date, 'Delete');

而不是

INSERT INTO placement_audit (new_name, old_name, user_name, entry_date, operation)
VALUE (NULL,:OLD.PLACEMENT_ID, v_user, v_date, 'Delete');

VALUES 而不是VALUE

正如评论中提到的，不需要select ... into ... from dual，所以只需写：

CREATE OR REPLACE TRIGGER placement_audit_trigger 
   BEFORE INSERT OR DELETE OR UPDATE ON LDS_PLACEMENT
   FOR EACH ROW
   ENABLE

BEGIN

   IF INSERTING THEN
      INSERT INTO placement_audit (new_name, old_name, user_name, entry_date, operation)
      VALUES (:NEW.PLACEMENT_ID, NULL, USER, SYSDATE, 'Insert');
   ELSIF DELETING THEN 
      INSERT INTO placement_audit (new_name, old_name, user_name, entry_date, operation)
      VALUES (NULL,:OLD.PLACEMENT_ID, USER, SYSDATE, 'Delete');
   ELSIF UPDATING THEN 
      INSERT INTO placement_audit (new_name, old_name, user_name, entry_date, operation)
      VALUES (:NEW.PLACEMENT_ID, :OLD.PLACEMENT_ID, USER, SYSDATE,'Update');
   END IF; 
END;

【讨论】：