所需表 INFO_CHANGE_LOG （公司改动日志表）
T_BIZ_CORP_INFO （公司表）
就是当公司表的某一列有变动的时候就自动把这一列存入INFO_CHANGE_LOG表中
帮帮忙啊 大神们 急啊
谢谢！！！！！！！！！！！再谢！！！！！！
------解决方案--------------------
这个貌似使用触发即可.
相关资料参考如下:
- SQL code
1. Create an 'AFTER INSERT' Trigger SQL> -- create demo tableSQL> create table Employee( 2 ID VARCHAR2(4 BYTE) NOT NULL, 3 First_Name VARCHAR2(10 BYTE), 4 Last_Name VARCHAR2(10 BYTE), 5 Start_Date DATE, 6 End_Date DATE, 7 Salary Number(8,2), 8 City VARCHAR2(10 BYTE), 9 Description VARCHAR2(15 BYTE) 10 ) 11 /Table created.SQL>SQL>SQL> -- AFTER INSERT TriggerSQL>SQL>SQL> CREATE OR REPLACE TRIGGER employee_after_insert 2 AFTER INSERT 3 ON employee 4 FOR EACH ROW 5 6 DECLARE 7 v_username varchar2(10); 8 9 BEGIN 10 -- Find username of person performing the INSERT into the table 11 SELECT user INTO v_username 12 FROM dual; 13 14 dbms_output.put_line('By: '||v_username); 15 dbms_output.put_line(':new.id: '||:new.id); 16 dbms_output.put_line(':new.first_name: '||:new.first_name); 17 dbms_output.put_line(':new.last_name: '||:new.last_name); 18 dbms_output.put_line(':old.id: '||:old.id); 19 dbms_output.put_line(':old.first_name: '||:old.first_name); 20 dbms_output.put_line(':old.last_name: '||:old.last_name); 21 END; 22 /Trigger created.SQL>SQL> -- prepare dataSQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values ('01','Jason', 'Martin', to_date('19960725','YYYYMMDD'), to_date('20060725','YYYYMMDD'), 1234.56, 'Toronto', 'Programmer') 3 /By: JAVA2S:new.id: 01:new.first_name: Jason:new.last_name: Martin:old.id::old.first_name::old.last_name:1 row created.SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('02','Alison', 'Mathews', to_date('19760321','YYYYMMDD'), to_date('19860221','YYYYMMDD'), 6661.78, 'Vancouver','Tester') 3 /By: JAVA2S:new.id: 02:new.first_name: Alison:new.last_name: Mathews:old.id::old.first_name::old.last_name:1 row created.SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('03','James', 'Smith', to_date('19781212','YYYYMMDD'), to_date('19900315','YYYYMMDD'), 6544.78, 'Vancouver','Tester') 3 /By: JAVA2S:new.id: 03:new.first_name: James:new.last_name: Smith:old.id::old.first_name::old.last_name:1 row created.SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('04','Celia', 'Rice', to_date('19821024','YYYYMMDD'), to_date('19990421','YYYYMMDD'), 2344.78, 'Vancouver','Manager') 3 /By: JAVA2S:new.id: 04:new.first_name: Celia:new.last_name: Rice:old.id::old.first_name::old.last_name:1 row created.SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('05','Robert', 'Black', to_date('19840115','YYYYMMDD'), to_date('19980808','YYYYMMDD'), 2334.78, 'Vancouver','Tester') 3 /By: JAVA2S:new.id: 05:new.first_name: Robert:new.last_name: Black:old.id::old.first_name::old.last_name:1 row created.SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('06','Linda', 'Green', to_date('19870730','YYYYMMDD'), to_date('19960104','YYYYMMDD'), 4322.78,'New York', 'Tester') 3 /By: JAVA2S:new.id: 06:new.first_name: Linda:new.last_name: Green:old.id::old.first_name::old.last_name:1 row created.SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('07','David', 'Larry', to_date('19901231','YYYYMMDD'), to_date('19980212','YYYYMMDD'), 7897.78,'New York', 'Manager') 3 /By: JAVA2S:new.id: 07:new.first_name: David:new.last_name: Larry:old.id::old.first_name::old.last_name:1 row created.SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description) 2 values('08','James', 'Cat', to_date('19960917','YYYYMMDD'), to_date('20020415','YYYYMMDD'), 1232.78,'Vancouver', 'Tester') 3 /By: JAVA2S:new.id: 08:new.first_name: James:new.last_name: Cat:old.id::old.first_name::old.last_name:1 row created.SQL>SQL>SQL>SQL> -- display data in the tableSQL> select * from Employee 2 /ID FIRST_NAME LAST_NAME START_DAT END_DATE SALARY CITY DESCRIPTION---- ---------- ---------- --------- --------- ---------- ---------- ---------------01 Jason Martin 25-JUL-96 25-JUL-06 1234.56 Toronto Programmer02 Alison Mathews 21-MAR-76 21-FEB-86 6661.78 Vancouver Tester03 James Smith 12-DEC-78 15-MAR-90 6544.78 Vancouver Tester04 Celia Rice 24-OCT-82 21-APR-99 2344.78 Vancouver Manager05 Robert Black 15-JAN-84 08-AUG-98 2334.78 Vancouver Tester06 Linda Green 30-JUL-87 04-JAN-96 4322.78 New York Tester07 David Larry 31-DEC-90 12-FEB-98 7897.78 New York Manager08 James Cat 17-SEP-96 15-APR-02 1232.78 Vancouver Tester8 rows selected.SQL>SQL>SQL>SQL> -- clean the tableSQL> drop table Employee 2 /Table dropped.SQL>SQL>