Query Optimization: Heuristics and Cost-based Strategies

In course

Description

This lecture covers query optimization strategies for OLAP queries, focusing on heuristic-based optimization and the INGRES optimizer. It explains the process of transforming logical operators into a physical plan, emphasizing the importance of join ordering based on cardinality. The instructor discusses the advantages and disadvantages of heuristic-based optimization, the use of static rules, and the significance of selectivity estimates and cost estimation in query optimization.

Instructor

Official source

https://mediaspace.epfl.ch/media/0_96uori86

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