How can materialized view find DDL?
How can materialized view find DDL?
“how to get ddl for materialized view” Code Answer
- — Views (use USER_VIEWS or DBA_VIEWS if needed):
- SELECT TEXT FROM ALL_VIEWS WHERE upper(VIEW_NAME) LIKE upper(‘%VIEW_NAME%’);
- — Or:
- SELECT dbms_metadata.
-
- — Materialized views (use USER_VIEWS or DBA_VIEWS if needed):
Can we use DML in materialized view?
A materialized view can be either read-only, updatable, or writeable. Users cannot perform data manipulation language (DML) statements on read-only materialized views, but they can perform DML on updatable and writeable materialized views.
Can we create view on top of materialized view?
You can create more than one materialized view for the same base table.
Can we use create or replace for materialized view?
No, you cannot alter the query of a materialized view without dropping it. The CREATE MATERIALIZED VIEW syntax does not support that feature.
How do you grant selects on a materialized view?
Right-click on a materialized view, and select Grant/Revoke Privileges. The Grant option is selected by default. In the Grantee section, select Public to grant privileges to all users. Or, select Specified Users option to grant privileges to specific users.
What is PostgreSQL materialized view?
Materialized views in PostgreSQL use the rule system like views do, but persist the results in a table-like form. When a materialized view is referenced in a query, the data is returned directly from the materialized view, like from a table; the rule is only used for populating the materialized view. …
How do you update a materialized view?
To update the contents of a materialized view, you can execute a query to refresh it. This will re-execute the query used to create it. Executing this refresh query will lock the materialized view so it can’t be accessed while refreshing.
What is the script to get the DDL for a materialized view?
Help Wanted! Question: What is the script to get the DDL for a materialized view. I just want to punch the materialized view syntax from the data dictionary. Can you use dbms_metadata for extracting the materialized view source code? Answer: Yes, dbms_metadata.get_ddl will extract the DDL for materialized views, but it needs formatting.
What does the create Materialized View statement do?
Use the CREATE MATERIALIZED VIEW statement to create a materialized view. A materialized view is a database object that contains the results of a query. The FROM clause of the query can name tables, views, and other materialized views. Collectively these objects are called master tables (a replication term)…
What happens if you drop the materialized view?
The table must have the same name and be in the same schema as the resulting materialized view. If the materialized view is dropped, then the preexisting table reverts to its identity as a table.
Can you create local materialized views on Master Tables?
You can create the following types of local materialized views (including both ON COMMIT and ON DEMAND) on master tables with commit SCN-based materialized view logs: You cannot create remote materialized views on master tables with commit SCN-based materialized view logs.