'Query optimizers' presentation slideshows

Relational Algebra

717 views • 59 slides

CSE 544: Optimizations

CSE 544: Optimizations. Wednesday, 5/10/2006. The three components of an optimizer. We need three things in an optimizer: A space of plans (e.g. algebraic laws) An optimization algorithm A cost estimator. Algebraic Laws. Commutative and Associative Laws

519 views • 51 slides

A Variability Model for Query Optimizers

260 views • 17 slides

A Variability Model for Query Optimizers

175 views • 17 slides

2 Old-Fashioned Problems

2 Old-Fashioned Problems. Surajit Chaudhuri Microsoft. Query Optimization Revisited. Great engineering, poorly understood What makes our search algorithm unique? Is our Cardinality Estimation consistent? What are the limits of effective query optimization?

46 views • 4 slides