有人可以帮我修复错误 pls-00049 吗？

Question

我已经为我的 Oracle 任务创建了一个触发器并遇到了一些错误，我正在尝试解决但不知道如何解决。我正在搜索错误修复程序，但没有找到有用的解决方案请问有人可以帮我做吗？

所以这是我的代码：

   create table sourcetablename_log (
    id  number, 
    operation_date date,
    old_username varchar2(20),
    new_username varchar2(20),
    old_first_name varchar2(20),
    new_first_name varchar2(20),
    old_last_name varchar2(20),
    new_last_name varchar2(20),
    action varchar2(20),
    author varchar2(20)
    );

    create or replace trigger src_log 
    before insert or delete or update on sourcetablename_log
    for each row
    begin
    if inserting then 
    insert into sourcetablename_log(id, operation_date, new_username,  new_firstname, new_lastname)
    values (:new.id, sysdate, :new.username, :new.firstname, :new.lastname);
    elsif updating then 
    insert into sourcetablename_log(id, operation_date, old_username, new_username, old_firstname, new_firstname, old_lastname, new_lastname)
    values (:new.id, sysdate, :old.username, :new.username, :old.firstname, :new.firstname, :old.lastname, :new.lastname);
    elsif deleting then 
    insert into sourcetablename_log(id, operation_date, old_username, new_username, old_firstname, new_firstname, old_lastname, new_lastname)
    values (:new.id, sysdate, :old.username, :new.username, :old.firstname, :new.firstname, :old.lastname, :new.lastname);
    end if;
    end src_log;

这是一个错误：

LINE/COL  ERROR
--------- -------------------------------------------------------------
4/27      PLS-00049: bad bind variable 'NEW.USERNAME'
4/42      PLS-00049: bad bind variable 'NEW.FIRSTNAME'
4/58      PLS-00049: bad bind variable 'NEW.LASTNAME'
7/27      PLS-00049: bad bind variable 'OLD.USERNAME'
7/42      PLS-00049: bad bind variable 'NEW.USERNAME'
7/57      PLS-00049: bad bind variable 'OLD.FIRSTNAME'
7/73      PLS-00049: bad bind variable 'NEW.FIRSTNAME'
7/89      PLS-00049: bad bind variable 'OLD.LASTNAME'
7/104     PLS-00049: bad bind variable 'NEW.LASTNAME'
10/27     PLS-00049: bad bind variable 'OLD.USERNAME'
10/42     PLS-00049: bad bind variable 'NEW.USERNAME'
10/57     PLS-00049: bad bind variable 'OLD.FIRSTNAME'
10/73     PLS-00049: bad bind variable 'NEW.FIRSTNAME'
10/89     PLS-00049: bad bind variable 'OLD.LASTNAME'
10/104    PLS-00049: bad bind variable 'NEW.LASTNAME'
Errors: check compiler log

我的问题是：

自动创建日志记录 table 并与之相关联触发器 A 创建一个存储过程，该过程创建一个 LOGGING table，其中包含对应的旧值列和新值列，ACTION 列，应该被填充通过 ACTION 类型和用户名 (AUTHOR) 示例：您有 table 个 USER 用户，下一列为：

用户名 VARCHAR
FIRST_NAME VARCHAR
LAST_NAME VARCHAR

您的程序应该生成一个新的 table，名称为“SOURCETABLENAME”_LOG - 在本例中 - USER_LOG 以及下一列：

身份证号码[或OPERATION_ID号码]
OPERATION_DATE日期
OLD_USERNAME VARCHAR
NEW_USERNAME VARCHAR
OLD_FIRST_NAME VARCHAR
NEW_FIRST_NAME VARCHAR
OLD_LAST_NAME VARCHAR
NEW_LAST_NAME VARCHAR
动作变量
作者 VARCHAR**

Answer 1

如果列名是例如new_username，那么您将使用 :new.new_username，而不仅仅是 :new.username。

所有其他列也是如此。

例如：

insert into sourcetablename_log(id, operation_date, new_username,  new_firstname, new_lastname)
    values (:new.id, sysdate, :new.new_username, :new.new_firstname, :new.new_lastname);

有人可以帮我修复错误 pls-00049 吗？

Can someone help me to fix an error pls-00049?

oracle

plsql

oracle-sqldeveloper