ALTER MATERIALIZED VIEW [schema. Hive performs view maintenance incrementally if possible, refreshing the view to reflect any data inserted into ACID tables. By default, no. A materialized view, or snapshot as they were previously known, is a table segment whose contents are periodically refreshed based on a query, either against a local or remote table. Materialized Views in Oracle. ALTER MATERIALIZED VIEW [db_name. To re-enable the materialized view, run ALTER MATERIALIZED VIEW with REBUILD. ALTER MATERIALIZED VIEW My_Indexed_View REBUILD; See also. ALTER permission on the table or view is required. You can issue SELECT statements to query a materialized view. Description. ALTER the existing dependencies to instead refer to the new view (refreshing the data if needed beforehand) Drop the original materialized view and indices which should now not have any dependants; ALTER THE materialized view and indices to drop the suffix to restore the original names; eg. The materialized view will be disabled when an UPDATE or DELETE occurs in the referenced base tables. For information on how to query materialized views, see Querying a materialized view. This example disables a materialized view and puts it in suspended mode. If you omit both the START WITH and NEXT values, or if you omit the alter_mv_refresh entirely, then Oracle Database does not automatically refresh the materialized view. In order to disable that you must break the dbms_job that was created in order to refresh the view. A materialized view created with the automatic refresh can not be alter to stop refreshing. Materialized views are a really useful performance feature, allowing you to pre-calcuate joins and aggregations, which can make applications and reports feel more responsive. Remarks. Using materialized views against remote tables is … ]materialized_view_name [Physical_Attributes_Clause] [STORAGE Storage_Clause] [REFRESH [FAST | COMPLETE | FORCE] [START WITH date] [NEXTREF date]Changes the storage or automatic refresh characteristics of a materialized view … Moving a materialized view to a managed access schema (using the ALTER MATERIALIZED VIEW … RENAME TO syntax) is prohibited unless the materialized view owner (i.e. The data in the materialized view remains unchanged, even when applications make changes to the data in the underlying tables. This restriction doesn't apply to INSERTs. The complication comes from the lag between the last refresh of the materialized view and subsequent DML changes to the base tables. the role that has the OWNERSHIP privilege on the materialized view) also owns the target schema. For information on how to create materialized views, see CREATE MATERIALIZED VIEW. ALTER MATERIALIZED VIEW My_Indexed_View DISABLE; This example resumes materialized view by rebuilding it. To update the data in the materialized view, you can use the The result set eventually becomes stale when data is inserted, updated, and deleted in the base tables. A materialized view in Azure data warehouse is similar to an indexed view … A materialized view is a table segment or database object that contains the results of a query. Creates a materialized view (also called a snapshot), which is the result of a query run against one or more tables or views. When you create a materialized view, its contents reflect the state of the underlying database table or tables at that time. Examples. 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