This guide walks you through installing, configuring, and using Egg‑Sequelize in Egg.js, explains core ORM features, demonstrates model definition and CRUD operations, and covers advanced topics such as complex queries, transactions, validation, migrations, associations, and common pitfalls to avoid.
This tutorial walks you through creating a Node backend using NestJS, configuring Sequelize with MySQL, setting up the project structure, writing DTOs, controllers, services, and modules, and implementing basic CRUD operations with code examples and deployment tips.
This article walks through setting up a Node.js backend using NestJS, integrating Sequelize with MySQL, configuring the database, defining entities, services, controllers, and demonstrating CRUD operations, along with optional features like GraphQL, Swagger, and deployment considerations.
The article outlines several SQL injection vulnerabilities discovered in various Sequelize ORM versions, explains the underlying causes related to improper JSON path key handling for MySQL, MariaDB, Postgres, and SQLite, provides reproduction screenshots, and strongly advises upgrading to patched releases.
This article explains how concurrent transactions updating the same MySQL InnoDB row can cause inconsistent results, reviews InnoDB isolation levels and lock types, and demonstrates using SERIALIZABLE isolation combined with exclusive row locks in Sequelize to ensure correct sequential updates.
This article explains how MySQL stores dates in UTC, why Sequelize returns UTC values despite a configured timezone, and demonstrates using custom getter methods (with moment) to automatically format DATE fields, including an advanced approach to apply the getter across multiple models.
