Query Rewrite: Predicate Pushdown (through grouping)

12/1/99


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Table of Contents

Query Rewrite: Predicate Pushdown (through grouping)

Example

Query Rewrite: Pushing predicates up

Query Rewrite: Predicate Move-around

Query Rewrite: Predicate Move-around

Nested Queries

Query Rewrite Summary

Plans for Single-Relation Queries (Prep for Join ordering)

Example

Determining Join Order

Enumeration of Left-Deep Plans

Enumeration of Plans (Contd.)

Example

Cost Estimation

Statistics and Catalogs

Size Estimation and Reduction Factors

Author: Alon Levy

Email: alon@cs.washington.edu

Home Page: http://www.cs.washington.edu/homes/alon

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