Обсуждение: Incremental refresh of materialized view - Patch
Hi all
I am building a patch to refresh materialized view incrementally from the change set decoded by using logical decoding from WAL.
As of now i can able to generate the changes that has to be updated in the materialized view but the thing was it not possible to do any DML operations on MATVIEWS.
Only from the concurrent refresh of matviews the DML operations are allowed.
However if the same methods in matview.c OpenMatViewIncrementalMaintenance & CloseMatViewIncrementalMaintenance are mad extern its possible to do DML from the patches like i am building now.
Is there any other way of doing DML operations on materialized views from patch.?
<correct me if i am wrong>
cheers
- Harry
Hi all
I am building a patch to refresh materialized view incrementally from the change set decoded by using logical decoding from WAL.As of now i can able to generate the changes that has to be updated in the materialized view but the thing was it not possible to do any DML operations on MATVIEWS.Only from the concurrent refresh of matviews the DML operations are allowed.However if the same methods in matview.c OpenMatViewIncrementalMaintenance & CloseMatViewIncrementalMaintenance are mad extern its possible to do DML from the patches like i am building now.Is there any other way of doing DML operations on materialized views from patch.?<correct me if i am wrong>cheers- Harry
On Thu, May 12, 2016 at 1:05 AM, hari.prasath <hari.prasath@zohocorp.com> wrote: > However if the same methods in matview.c > OpenMatViewIncrementalMaintenance & CloseMatViewIncrementalMaintenance are > mad extern its possible to do DML from the patches like i am building now. > > Is there any other way of doing DML operations on materialized views > from patch.? If you want to maintain materialized data using application-level DML, you should use a table, not a materialized view. Once there is built-in incremental maintenance, allowing DML will just make the contents of a materialized view completely unreliable. -- Kevin Grittner EDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company