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 ...
CREATEORREPLACETRIGGERinsteadof_trigger INSTEADOFINSERTONemp_deptFOREACH ROWDECLAREv_tempINT;BEGINSELECTCOUNT(*)INTOv_tempFROMdept_newWHEREdeptno=:new.deptno;IFv_temp=0THENINSERTINTOdept_new(deptno,dname)VALUES(:new.deptno,:new.dname);ENDIF;SELECTCOUNT(*)INTOv_tempFROMemp_newWHEREempno=:new.empno...
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 ...
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,...
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 ...
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; ...
FOR INSERT OR UPDATE ON patrik_warnmeldung COMPOUND TRIGGER -- Variable to keep track of the highest sort value highest_sort NUMBER := 0; active_row_warnmeldung_a_mat NUMBER := 0; active_row_fehlermeldung_a_mat NUMBER := 0; active_row_warnmeldung_p_mat NUMBER := 0; ...
Hi , I have posted my query but for some reason this errors out CREATE TRIGGER z_LOGIN2 AFTER UPDATE OF lastsignondttm ON SYSADM.PSOPRDEFN FOR EACH ROW BEGIN SELECT DISTINCT a.oprid, a.oprdefndesc, a.lastsignondttm,…
ROWID-Contains the ID number of the row where the insert or update that triggers an event alert occurs. MAILID-Contains the email username of the person who enters an insert or update that triggers an event alert. ORG_ID-Contains the organization ID that is selected when the alert runs....