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MySQL8

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Aikesheng Open Source Community
Aikesheng Open Source Community
Feb 8, 2023 · Databases

Customizing MySQL 8.0 Execution Plan Output per User with the explain_format Variable

This article explains how MySQL 8.0.32 introduces the @@explain_format system variable that allows administrators to set different execution‑plan output formats (tree, traditional, json, etc.) for individual users, and demonstrates the configuration steps with concrete SQL commands and examples.

DatabaseMySQLMySQL8
0 likes · 5 min read
Customizing MySQL 8.0 Execution Plan Output per User with the explain_format Variable
Aikesheng Open Source Community
Aikesheng Open Source Community
Feb 28, 2022 · Databases

Understanding and Using UNION in MySQL 8.0

This article explains the purpose, syntax rules, and practical examples of the UNION operator in MySQL, covering distinct and ALL modes, ORDER BY restrictions, new TABLE and VALUES usages introduced in MySQL 8.0.19, and differences from MySQL 5.7.

CodeExamplesDatabaseMySQL
0 likes · 8 min read
Understanding and Using UNION in MySQL 8.0
Java Architect Essentials
Java Architect Essentials
Nov 19, 2021 · Databases

MySQL 8.0 JSON Functions: Overview, Syntax, and Practical Examples

This article introduces MySQL 8.0's enhanced JSON capabilities, covering storage constraints, utility functions, path expressions, in‑place updates, indexing, merging, extraction operators, and the JSON_TABLE function, with clear code examples for each feature.

DatabaseJSONJSON Functions
0 likes · 7 min read
MySQL 8.0 JSON Functions: Overview, Syntax, and Practical Examples
Practical DevOps Architecture
Practical DevOps Architecture
Jan 5, 2021 · Databases

MySQL 8.0 Master‑Slave Replication Configuration Guide

This tutorial walks through installing MySQL 8.0 on two servers, enabling binary logging, creating a replication user, configuring master and slave settings, handling common errors, and verifying that master‑slave synchronization works correctly.

DatabaseMaster‑SlaveMySQL
0 likes · 4 min read
MySQL 8.0 Master‑Slave Replication Configuration Guide
Aikesheng Open Source Community
Aikesheng Open Source Community
Nov 17, 2020 · Databases

How to Use CHECK Constraints in MySQL 8

This article explains MySQL 8’s newly supported CHECK constraints, outlines usage restrictions, and provides step‑by‑step examples—including simple age validation and complex gender‑age logic—showing how to create, test, alter, and drop constraints while highlighting practical considerations.

CHECK constraintDatabaseMySQL
0 likes · 7 min read
How to Use CHECK Constraints in MySQL 8
Aikesheng Open Source Community
Aikesheng Open Source Community
Sep 6, 2019 · Databases

Setting Up MySQL 8.0 to MySQL 5.7 Replication

This guide explains how to configure replication from a MySQL 8.0 master to a MySQL 5.7 slave, covering supported version combinations, character‑set adjustments, authentication plugin changes, user creation, CHANGE MASTER commands, status verification, quick testing, and common pitfalls when using newer MySQL features.

MySQLMySQL5.7MySQL8
0 likes · 7 min read
Setting Up MySQL 8.0 to MySQL 5.7 Replication