On 2/20/24 05:25, Zahir Lalani wrote:
-From: David G. Johnston <[email protected]>
-Sent: Tuesday, February 20, 2024 1:20 PM
-To: Zahir Lalani <[email protected]>
-Cc: Adrian Klaver <[email protected]>;
[email protected]
-Subject: Re: Mat Views and Conflicts
-
-
-On Tuesday, February 20, 2024, Zahir Lalani <mailto:[email protected]>
wrote:
-
-This suggests that not all the MV data is cached and it still queries the
source tables in some way?
-
-No. That isn’t how MV work. If you include an MV relation in your query from
clause there is no reference or knowledge as to the underlying query that built
the MV physical relation.
-
-David J.
Thx David
Cool so that is what my understanding was. But that comes back to my main
question - the MV is cached data from the last time refresh was run. If I query
the MV and the underlying realtime data changes (i.e. from the source tables
not the MV) - should I be getting a replication conflict issue? I would have
thought not as the MV data should not have been impacted
Then either something is running REFRESH MATERIALIZED VIEW or some other
process is accessing the underlying tables.
Z
--
Adrian Klaver
[email protected]
