Category: SQL
- SQL
- October 17, 2022
Understanding Join Methods In Oracle Database 19c
A join method is the mechanism for joining two row sources. Depending on the statistics, the optimizer chooses the method…
- SQL
- September 18, 2022
Understanding Clustering In Oracle Database
Clustering is a method of storing tables that are intimately related and often joined together into the same area on…
- SQL
- May 18, 2022
Understanding RealTime Materialized View In Oracle Database 19c
In earlier Oracle version, QUERY REWRITE feature used to stop working as soon as the materialized view become STALE, unless…
- SQL
- July 4, 2021
Understanding Materialized View Query Rewrite
When base tables contain large amount of data, it is expensive and time-consuming to compute the required aggregates or to…