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Expert MySQL, Second Edition by Charles Bell

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CHAPTER 12

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Internal Query Representation

This chapter presents the first part of the advanced database technologies for the database-experiment project (DBXP). I begin by introducing the concept of the query tree structure, which is used for storing a query in memory. Next, I’ll present the query tree structure used for the project along with the first in a series of short projects for implementing the DBXP code. The chapter concludes with a set of exercises you can use to learn more about MySQL and query trees.

The Query Tree

A query tree is a tree structure that corresponds to a query, in which leaf nodes of the tree contain nodes that access ...

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