ALTERTRIGGERtrigger_name DISABLE;-- 失效,生效改为enable ALTERTABLEtable_name DISABLEALLTRIGGERS;-- 批量失效,批量生效改为enable ALTERTRIGGERtrigger_name COMPILE;-- 重新编译trigger DROPTRIGGERtrigger_name;-- 删除trigger oracle数据库中trigger的使用,大概就是这样,虽然看着比较多,但是在实际中确是不太建议使...
event通常是insert、delete或update等DML操作。 for example: 1.先创建一张表,用来记录emp2上的操作: create table emp2_log( uname varchar2(20), action varchar2(10), atime date ); 2.然后创建触发器: create or replace trigger trig after insert or delete or update on emp2 beginifinserting then ...
ALTERTABLEtable_name DISABLEALLTRIGGERS;-- 批量失效,批量生效改为enable ALTERTRIGGERtrigger_name COMPILE;-- 重新编译trigger DROPTRIGGERtrigger_name;-- 删除trigger oracle数据库中trigger的使用,大概就是这样,虽然看着比较多,但是在实际中确是不太建议使用的,因为维护起来很不方便,所以在能不用trigger的地方还是...
CREATE TRIGGER trigger_name [BEFORE|AFTER|INSTEAD OF] event_name ON table_name [ -- 触发器逻辑... ]; 1. 2. 3. 4. 5. 触发器的一个例子: -- 实际的触发器 CREATE OR REPLACE TRIGGER TEST_TRI AFTER DELETE OR INSERT OR UPDATE ON TESTTABLE DECLARE V_TYPE TEST_LOG.L_TYPE%TYPE; BEGIN ...
Example:记录启动数据库时的事件以及时间。 此处因为是系统触发器,所以需要用sysdba的权限登陆。 CREATE TABLE event_table(event VARCHAR2(50),event_time DATE);CREATE OR REPLACE TRIGGER event_trigger AFTER STARTUP ON DATABASE BEGIN INSERT INTO event_table VALUES(ora_sysevent,sysdate); END; ...
2) Trigger name# Specify the name of the trigger that you want to create after theCREATE OR REPLACEkeywords. 3) BEFORE | AFTER# TheBEFOREorAFTERoption specifies when the trigger fires, either before or after a triggering event e.g.,INSERT,UPDATE, orDELETE ...
CREATE OR REPLACE TRIGGER trigger_name. BEFORE/AFTER INSERT/UPDATE/DELETE. ON table_name. FOR EACH ROW. WHEN (condition)。 BEGIN. -触发器操作。 END; 在上述语法中,WHEN子句用于指定触发器的条件。条件可以是任何返回TRUE或FALSE的表达式,如果条件返回TRUE,则触发器的操作将被执行,否则将被忽略。 例如,...
This can be used with the most of export types: TABLE, TRIGGER, PROCEDURE, VIEW, FUNCTION or PACKAGE, etc. ORA_INITIAL_COMMAND This directive can be used to send an initial command to Oracle, just after the connection. For example to unlock a policy before reading objects or to set some...
CREATE TRIGGER You Encounter Permissions Issues for the Replication User Schema The replication user schema must have the permissions described in "Creating the User Schema Manually" inConfigure an Oracle Publisher. Oracle Error ORA-01000 Replication uses cursors on the Oracle Publisher during the proces...
ClickOK. This action defines theCreateInsertcomponent as the trigger that will cause the table to refresh. In the same way add a Delete operation by dropping theDeleteoperation fromEmpDetails1onto the panelGroupLayout in the page footer. As before, create it as an ADF button. ...