Oracle SQL Optimizer Overview | Query Optimizer Concepts
Автор: DBA Genesis
Загружено: 2019-09-19
Просмотров: 10537
The #SQL #Optimizer runs your SQL with a variety of options that include various hints and SQL rewrites to find the optimal performing SQL rather automatically.
Query #optimization is a function of many relational #database management systems. The #query optimizer attempts to determine the most efficient way to execute a given query by considering the possible query plans.
00:00 Database Optimizer
01:11 How plan is generated & optimizer calculates LCM?
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