执行计划是MySQL优化器选择的数据访问路径，理解如何解读执行计划是SQL性能优化的基础技能。本文将系统地讲解EXPLAIN命令的使用方法和各项指标的解析技巧。 执行计划基础：EXPLAIN命令 ...

Community driven content discussing all aspects of software development from DevOps to design patterns. If you plan to do database development with Java and MySQL, the first thing you’ll need to do is ...

SQL databases have constraints on data types and consistency. NoSQL does away with them for the sake of speed, flexibility, and scale. One of the most fundamental choices to make when developing an ...

Some users have been experiencing the “Error: MySQL shutdown unexpectedly” error message when they try to start the MySQL server through the XAMPP web server ...

Make sure you have setup XAMPP stack in your system. The following guide explains how to setup XAMPP stack in Linux. Alternatively, you can use the LAMP or LEMP stacks which provides both PHP and ...

For English only, other languages will not accept. at org.antlr.v4.runtime.atn.ParserATNSimulator.noViableAlt(ParserATNSimulator.java:2026) ~[antlr4-runtime-4.7.2.jar ...

I have a mariadb based database that has a few tables and I use subqueries. After migrating to gorm2, I noticed that the generated subquery string is syntactically incorrect and hence it fails. To be ...

Community driven content discussing all aspects of software development from DevOps to design patterns. There’s a recent article on TheServerSide that hopefully reminded Hibernate and JPA developers ...

Abstract: Data access that is accurate, fast, and precise is a modern need for analysis or business decision making. NLIDB (Natural Language Interface to Database) is a system that allows users to ...