Might be a long shot, but I'm looking for a way to see if a row has ever been updated since it was inserted.
Ex.
CREATE TABLE TEST_DATA AS ( SELECT 'A' AS dummy FROM dual UNION SELECT 'B' AS dummy FROM dual ); UPDATE TEST_DATA SET dummy = 'C' WHERE dummy = 'B'; Is there any way I can tell that the 'C' record has been updated?
Also, I have absolutely no control over the data model so I can't add an add timestamp and an update timestamp to the actual table.
this will work:
create table test_data(a varchar(1)); insert into test_data values('A'); insert into test_data values('B'); insert into test_data values('C'); insert into test_data values('D'); select * from test_data; A B C D create table noofchanges(data varchar(1),numberofchanges int) ; insert into noofchanges(data,numberofchanges) select a,0 from test_data; select * from noofchanges; A 0 B 0 C 0 D 0 CREATE OR REPLACE TRIGGER test_data_before_update BEFORE UPDATE ON test_data FOR EACH ROW BEGIN update noofchanges set numberofchanges=numberofchanges+1 where data=:old.a; END; update test_data set a='A' where a='B'; select * from test_data; A A C D select * from noofchanges A 0 B 1 C 0 D 0 thank you!!!!!!
