SQL> --3、创建触发器t_emp1
SQL> create or replace trigger t_emp1
2 before update of sal on emp1
3 referencing old as o new as n
4 for each row
5 BEGIN
6 insert into old_emp1 values(: o.empno, : o.sal, : n.sal);
7 end t_emp1;
8 /
警告: 创建的触发器带有编译错误。
SQL>
SQL> show err
TRIGGER T_EMP1 出现错误:
LINE/COL ERROR
-------- -----------------------------------------------------------------
0/0 PLS-00801: 内部错误 [ph2csql_strdef_to_diana:bind]
2/5 PL/SQL: SQL Statement ignored
2/17 PL/SQL: ORA-06544: PL/SQL: 内部错误, 参数:
[ph2csql_strdef_to_diana:bind], [], [], [], [], [], [], []
SQL> create or replace trigger t_emp1
2 before update of sal on emp1
3 referencing old as o new as n
4 for each row
5 BEGIN
6 insert into old_emp1 values(:o.empno, :o.sal, :n.sal);
7 end t_emp1;
8 /
触发器已创建
: 与 o 之间, 不要有空格。
: o.empno, : o.sal, : n.sal;
修改为:
:o.empno, :o.sal, :n.sal