方法二: 当然,还可以试试下面的语句 Select * From user_triggers; --所有触发器 Select * From user_procedures; --所有存储过程 Select * From user_views; --所有视图 Select * From user_tables; --所有表
通过user_triggers视图来查看触发器:select * from user_triggers; 使触发器失效:alter trigger change_ename disable; 使触发器生效:alter trigger change_ename enable; 删除触发器:drop trigger change_ename;
ALTER TABLE [schema.]table_name {ENABLE|DISABLE} ALL TRIGGERS; --例:使表EMP 上的所有TRIGGER 失效: ALTER TABLE emp DISABLE ALL TRIGGERS; 8.4 触发器和数据字典 相关数据字典:USER_TRIGGERS、ALL_TRIGGERS、DBA_TRIGGERS SELECT TRIGGER_NAME, TRIGGER_TYPE, TRIGGERING_EVENT, TABLE_OWNER, BASE_OBJECT...
select * from dba_triggers; select * from all_triggers; select * from user_triggers; 2.3 删除触发器 drop trigger 触发器名; select 'DROP TRIGGER ' || t.owner || '.' || t.trigger_name || ';' 删除 from all_triggers t where t.owner = 'SCOTT' and t.table_name = 'STUDENT_INF...
Trigger_body; 其中referencing_clause子句的用途是通过一个不同的名称,引用当前正在被更新的记录行中的数据。WHEN子句中的trigger_condition—如果出现—就应该首先执行判断,只有当这个条件值为真的时候,才会执行触发器的主体代码。 2、DML触发器的激活顺序
权限范围,由大到小:dba_* > all_* > user_* select * from dba_triggers; select * from all_triggers; select * from user_triggers; 2.3 删除触发器 代码语言:javascript 复制 drop trigger 触发器名; select 'DROP TRIGGER ' || t.owner || '.' || t.trigger_name || ';' 删除from all_...
User-named PL/SQL subprograms can be written to perform almost any task for which one might use a user-named trigger. As with all triggers, the scope of a user-named trigger is the definition level and below. When more than one user-named trigger has the same name, the trigger defined...
select trigger_name,status fromuser_triggers; --禁用某个触发器 ALTER TRIGGER e_update3disable; --禁用某个表上的所有触发器 alter table edisable all triggers; --删除触发器 DROP TRIGGER e_update3; 练习1:DML触发器 --- 表级触发器 行级触发器 create or replace trigger e_update before update...
triggers 触发器信息 包括触发器的类型,事件。触发器体等信息 users 用户信息 。包括用户临时和默认的表空间的类型 views 视图 信息 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 权限视图 复制 role_sys_privs 角色拥有的系统权限视图 ...
Introduction to Oracle Triggers Oracle Triggers are nothing but chunk of code in a PL/SQL, which is saved in the Oracle database also can be reused and repurposed whenever the user needs it. This can be used in both DDL (Data Definition Language) and DML (Data Manipulation Language) cod...