The "CREATE OR REPLACE MATERIALIZED VIEW" statement in Oracle allows you to create or replace an existing materialized view. In this article, we will discuss the steps involved in creating or replacing a materi
You can select data from a materialized view as you would from a table or view. In replication environments, the materialized views commonly created are primary key, rowid, object, and subquery materialized views. See Also: Oracle Database Administrator’s Guide for information on the types of...
创建物化视图需要有CREATE TABLE权限。更多有关 OceanBase 数据库权限的详细介绍,请参见Oracle 模式下的权限分类。 语法 CREATEMATERIALIZEDVIEWview_name[column_list][table_option_list][partition_option][refresh_clause]ASview_select_stmt;column_list:(column_name[,column_name...])refresh_clause: REFRESH[COM...
Oracle中的物化视图(Materialized View) Oracle中的物化视图(Materialized View)是一种特殊的视图,它存储了查询结果的数据,而不是像普通视图那样仅存储查询的定义。物化视图允许用户对大型数据集进行预先计算和存储,从而提高了查询性能,尤其是在需要频繁访问相同数据集的情况下。 创建物化视图的基本语法 创建物化视图的基本...
materialized_view 作成するマテリアライズド・ビューの名前を指定します。名前は、「データベース・オブジェクトのネーミング規則」に指定されている要件を満たしている必要があります。Oracle Databaseは、マテリアライズド・ビュー名に接頭辞または接尾辞を追加して、マテリアライズド・...
ALTER MATERIALIZED VIEW LOG scott.emp STORAGE (NEXT 50K);Remove the materialized view log associated with scott's emp table from the database:DROP MATERIALIZED ... Get Oracle SQL: the Essential Reference now with the O’Reilly learning platform. O’Reilly members experience books, live events,...
Oracle Database - Enterprise Edition - Version 11.2.0.2 and later: Create Materialized View Results in ORA-955 But Drop Materialized View Does Not Succeed Either
来自专栏 · Oracle数据库 create or replace procedure JS_DATA_DEAL is begin execute immediate 'drop materialized view M_线段'; execute immediate 'create materialized view M_线段 refresh force on demand as select t1.线名,t1.行别,t1.MAPINFO_ID ID,t1.里程 里程1,t2.里程 里程2,t1.X X1,t1....
Creates a materialized view. Syntax CREATEMATERIALIZEDVIEWname[build_clause][create_mv_refresh]ASsubquery wherebuild_clauseis: BUILD {IMMEDIATE|DEFERRED} wherecreate_mv_refreshis: REFRESH[COMPLETE][ON DEMAND] Description CREATE MATERIALIZED VIEW defines a view of a query that is not updated each time...
CREATE[ORREPLACE] [PUBLIC]SYNONYMschema.synonym_nameFORschema.object;Code language:SQL (Structured Query Language)(sql) In this syntax: First, specify the name of the synonym and its schema. If you skip the schema, Oracle will create the synonym in your own schema. ...