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DDL

PolarDB for MySQL Cold Data Archiving Supports DDL Changes Within Seconds

The article introduces PolarDB for MySQL's new ability to support quick DDL changes for cold data archiving, facilitating more efficient management and separation of cold and hot data.

An Introduction to MySQL Parallel Query and DDL

This article describes the basic usage, effects, principles, and restrictions of the parallel acceleration technologies provided by MySQL at the InnoDB layer.

Full Support of PolarDB-X Columnar Index for Multi Schema

This article introduces the Schema Evolution capability designed for DDL operations in the PolarDB-X column-oriented storage engine.

PolarDB-X Partition Key Column Type Change

This article uses column type change as an example to briefly explain how to execute the ALTER TABLE statement in PolarDB-X.

Global Secondary Index in PolarDB-X

This article describes the technical efforts made by PolarDB-X to introduce global secondary indexes that are compatible with the indexing experience in MySQL.

PolarDB-X Sharding Rule Changes

This article covers PolarDB-X's sharding rule changes, a cloud-native database that distributes data across multiple nodes and supports dynamic repartitioning.

About Database Kernel | Deep Analysis on the Optimization and Evolution of PolarDB DDL Locks

This article provides an overview of the experience and progress in end-to-end Metadata Lock (MDL) lock management in Alibaba Cloud PolarDB.

An Interpretation of PolarDB-X Source Codes (9): Life of DDL

Part 9 of this 10-part series mainly explains the implementation of PolarDB-X DDL in the compute node (CN).

A Deep-Dive into MySQL: An Exploration of the MySQL Data Dictionary

This article focuses on the data structure and implementation architecture of the data dictionary.

PostgreSQL Multi-Tenant Usage – Multi-Schema Batch Execution of DDL Scripts

This short article addresses a common issue of working batches when DDL scripts need to be executed in multiple tenants.

Solving the DTS-077100 Error During Data Synchronization

This article explains a series of possible error scenarios while working with DTS.