Examples of using Materialized views in English and their translations into Chinese
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Supports temporary tables but does not support materialized views.
Materialized views can be another important technique to improve performance.
In 3.0,Cassandra will introduce a new feature called Materialized Views.
Materialized views store data transformed by the corresponding SELECT query.
Another benefit is that it also enables an application to maintain materialized views.
If omitted, all regular tables and materialized views in the current database are vacuumed.
Materialized views are another convenient virtual table feature supported by PostgreSQL.
Graph-aware query planner uses materialized views to improve the query performance.
Materialized views require disk space, but do not need to be recomputed each time they are invoked.
We just insert the data into the scores table,and Cassandra will populate the materialized views accordingly.
These stores becomes materialized views of the log- they contain derived, not original, content.
This second edition covers LATERAL queries,augmented JSON support, materialized views, and other key topics.
As an example of how materialized views can be used, suppose we want to track the high scores for players of several games.
Thus, the DBMS willstore multiple copies of its data in pre-computed materialized views in order to quickly respond to any possible query.
These materialized views, which only contain data required by a query, allow applications to quickly obtain the information they need.
The database can do that automatically, but such updates make writes more expensive,which is why materialized views are not often used in OLTP databases.
If many queries are used, materialized views can result in unacceptable storage capacity requirements and storage cost.
You can also use events to maintain materialized views that pre‑join data owned by multiple microservices.
If the materialized view has a SELECT* statement, any added columns will be included in the materialized view's columns.
Maintaining the materialized view puts additional load on the database, while actually the whole point of a cache is to reduce load on the database!
What is Materialized View.
A table may also be a materialized view of another table.
All of the entries have been copied into the all time high materialized view:.
Any deleted columns which are part of theSELECT statement will be removed from the materialized view.
We can also delete rows from the base table and the materialized view's records will be deleted.
To create the materialized view, we provide a simple select statement and the primary key to use for this view. .
A materialized view is a database object that contains the results of a query which can be updated as needed from the original base table.
It really is commendable that the initiative to have an informal meeting with the Member States in order toexchange views on the report materialized for the third year in a row.
