Both Oracle and MySQL offer CREATE TRIGGER statement that allows you to define a trigger on table. But the syntax of this statement is different in these databases: For example, let's create a trigger as follows: Oracle: -- Sample tables used in the triggerCREATETABLEcities(nameVARCHAR2(30)...
triggersin Oracle Forms, I have given examples forForm Level triggers,Data Block Level triggersandItem Level Triggers. And in this tutorial I am just giving the simple tutorial to how to create a trigger in Oracle Form's object navigator. Create Form Level Trigger 1. Click on the Triggers...
1.DELETE TRIGGER,used for delete employer after delete the department. This is a rows trigger. CREATE OR REPLACE TRIGGER del_eptid AFTER DELETE ON deptment FOR EACH ROW--Rows trigger BEGIN DELETE FROM emp WHERE id=:old.id; END del_deptid; / 2.INSERT TRIGGER,used for insert a new employ...
When you create a materialized view log for a table, Oracle Database implicitly creates anAFTERROWtrigger on the table. This trigger inserts a row into the materialized view log whenever anINSERT,UPDATE, orDELETEstatement modifies data in the master table. You cannot control the order in which ...
第二十二章 SQL命令 CREATE TRIGGER(二) SQL触发器代码 如果LANGUAGE SQL(默认),被触发的语句是一个SQL过程块,包括一个SQL过程语句后跟一个分号,或者关键字BEGIN后跟一个或多个SQL过程语句,每个SQL过程语句后跟一个分号,最后以END关键字结束。 被触发的操作是原子的,它要么完全应用,要么根本不应用,并且不能包含COMM...
I have written many posts related toForm Level triggersData Block Level triggersandItem Level Triggers. And in this tutorial I am just giving the simple tutorial to how to create a trigger in Oracle Form's object navigator. Create Form Level Trigger ...
CREATE PUBLIC SYNONYM emp_table FOR hr.employees@remote.us.example.com; 別のスキーマ内に基礎となるオブジェクトが含まれている場合は、基礎となるオブジェクトと同じ名前をシノニムに指定することもできます。Oracle Databaseによるシノニムの変換例:Oracle Databaseは、オブジェクトの参照を、パ...
oracle触发器错误:PLS-00103: 出现符号 ""在需要下列之一时:create or replace trigger tri_bifer_translate before insert on translate for each row begin select seq_translate.nextval into:new.TranslateNO from dual; end; TRIGGER SCOTT.TRI_BIFER_TRANSLATE 编译错误 错误:PLS-00103: 出现符号 ""在需要...
在Oracle数据库中,使用如下语句创立一种触发器:Create or replace trigger ai_empAfter insert on empFor each
sql: Oracle 11g create table, function,trigger, sequence,---自动增长ID--序列创建dropSEQUENCEBookPlaceList_SEQ;CREATESEQUENCEBookPlaceList_SEQINCREMENTBY1--每次加几个STARTWITH1--从1开始计数NOMAXVALUE--不设置最大值NOCYCLE--