On 5 May 2010 13:14, Chris Barnes <compuguruchrisbarnes@xxxxxxxxxxx> wrote:
It has been some years since I worked with Oracle, doesn't Oracle recompile the view when the object it references changes in structure?
Send
What does Oracle do when you've got a view like:
CREATE OR REPLACE VIEW test_view AS
SELECT test.test_id, test.test_value, date_is_future(test.test_date) as upcoming
FROM test;
Where date_is_future expects a text field, but you change the test table so that test_date is now varchar(20)? The function no longer matches the signature. Does it just prevent it? And what about when conditions are provided in a WHERE clause which become invalid when the column type changes?
Thom
