oracle read rewrite 功能概述

 

alter session set query_rewrite_enabled = true;

alter session set query_rewrite_integrity = enforced;

create

create materialized view my_all_objects_aggs

build immediate

refresh on commit

enable query rewrite

as

select owner,count(*) from my_all_objects group by owner

/ 

 

analyze table my_all_objects_aggs compute statistics;

 

 

set autot on

set timing on

select owner,count(*) from my_all_objects group by owner