--创建表结构 /* CREATE TABLE TBL_USER( USER_ID INTEGER PRIMARY KEY, UNAME VARCHAR2(20) NOT NULL, UPWD VARCHAR2(20) NOT NULL, LAST_MODIFIED DATE );*/ --1、创建程序包 CREATE OR REPLACE PACKAGE PKG_TBLUSER_UPDATE AS G_ID TBL_USER.USER_ID%TYPE; END PKG_TBLUSER_UPDATE; / --2、创建行触发器 CREATE OR REPLACE TRIGGER AFTER_UPD_TBLUSER_ROWTRG AFTER UPDATE OF UNAME ON TBL_USER FOR EACH ROW BEGIN PKG_TBLUSER_UPDATE.G_ID:=:NEW.USER_ID; END; / --3、创建语句触发器(根据程序包的全局变量,对数据表TBLUSER字段进行更新) CREATE OR REPLACE TRIGGER AFTER_UPD__TBLUSER_TRG AFTER UPDATE OF UNAME ON TBL_USER BEGIN UPDATE TBL_USER SET LAST_MODIFIED = SYSDATE WHERE USER_ID = PKG_TBLUSER_UPDATE.G_ID; END; /
时间: 2024-09-30 06:35:41