Updating a materialized view in oracle Free adult webcam show chat no sign up

04 Apr

So I used to think materialized views in Postgres would be an awesome feature. Hopefully if PG 10 implements this, they'll make it actually useful to people.That is until I had to endure the hell hole which is Oracle's implementation.. So I used to think materialized views in Postgres would be an awesome feature. Hopefully if PG 10 implements this, they'll make it actually useful to people.The simplest scenario is when the partitioning key of the table is available in the SELECT list of the materialized view, because this is the easiest way to map a row to a stale partition.The key points when using partially stale materialized views are: Partitioning and Refresh In a data warehouse, changes to the detail tables can often entail partition maintenance operations, such as DROP, EXCHANGE, MERGE, and ADD PARTITION.In 12c R2, a Materialized View that is STALE can still speed up queries while delivering correct results.The data from the stale MV is then on the fly combined with the change information from MV logs in an operation called ON QUERY COMPUTATION.Yes this thread is a complete vent, and also a plea to the pg guys to do materialized views right!

Having a fact table that is partitioned offers two additional benefits for materialized views.

You can make a good case that's a good thing, because it lets you optimize the process around your needs..... Hmm I think a materialized view you have to update yourself is called a "table"..

but after dealing with the nightmare that is Oracle 11g, I think it'd be much more fun going that route with triggers and everything.

For PCT to be available, the detail tables must be partitioned.

The partitioning of the materialized view itself has no bearing on this feature.