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Join

How to Write a High-Performance SQL Join: Implementation and Best Practices of Joins

This article aims to sort the usage and internal implementation of joins.

Query Resolution of MySQL 8.0 Optimizer

This article introduces how MySQL 8.0 optimizer turns a simple string into an execution sequence the database executor can return the data to the client.

Query Transformation of MySQL 8.0 Optimizer

This article introduces the complex transformation process of subqueries, partitioned tables, and JOIN operations.

Detailed Explanation of Query Rewriting Based on Materialized Views

This article describes the definition of materialized view for databases and ways to rewrite queries based on it.

How to Implement Join Operation on Distributed Databases

This article explores several ways for implementing join on distributed databases, namely Lookup Join using PolarDB-X.