How to get changed records in a table

Question

I have a table t1 as
create table t1( num number, name varchar2(35),code char(2));
my data looks like
num name code
1 xy c1
2 zx c2
3 qq c5
after 2 hr i have changed my value to:
1 zx c3
2 za c2
3 qq c5
i need to get a select statement which gives the changed rows:
my output looks like:
1 zx c3
2 za c2
how to get these changed rows
Thanks in advance

Answer 1

"It's not working" - fabulous feedback.
Really any reply to that should be just left at "because you're doing it wrong" however....
The flashback query syntax doesn't work like that.
Has to be more like this:
select t1.column,t2.column
from t1 ,t2
where t1.column=t2.column
MINUS
select t1.column,t2.column
from t1 AS OF TIMESTAMP TO_TIMESTAMP('27.04.2011 10:00:00', 'DD-MM-YYYY HH24:MI:SS')
,    t2 AS OF TIMESTAMP TO_TIMESTAMP('27.04.2011 10:00:00', 'DD-MM-YYYY HH24:MI:SS')
where t1.column=t2.column;The documentation is great for seeing how things should work, syntax etc.... you should try it.