Constraints & Circularities Enforcing a foreign key reference without constraints Constraints & Circularities Adding constraints between tables means that tables must be creat...

Model definition - 模型定义 时间戳 数据类型 Array(ENUM) 范围类型 可延迟 Getters & setters 定义为属性定义的一部分 定义为模型参数的一部分 用于 getter 和 setter 定义内部的 Helper 方法 验证 验证器 与 allowNull 模型验证 配置 导入 乐观锁定...

Querying Attributes Where Basics Operators Range Operators Combinations Operators Aliases Operators security JSON PostgreSQL MSSQL JSONB Nested object Nested key Contai...

Read Replication Read Replication Sequelize supports read replication , i.e. having multiple servers that you can connect to when you want to do a SELECT query. When you do rea...

Extending Data Types Example PostgreSQL Ranges Extending Data Types Most likely the type you are trying to implement is already included in DataTypes . If a new datatype is ...

Associations Associations For the most part hooks will work the same for instances when being associated except a few things When using add/set functions the beforeUpdate/aft...

Promises and async/await Promises and async/await As shown above by the extensive usage of .then calls, Sequelize uses Promises extensively. This means that, if your Node vers...

Read Replication - 读取复制 Read Replication - 读取复制 Sequelize 支持 读取复制 , 即,当你要执行 SELECT 查询时,可以连接多个服务器. 当你执行读取复制时,你可以指定一台或多台服务器充当读取副本,并指定一台服务器充当写入主机,该主机处理所有写入和更新并将它们传播到副本(请注意,实际复制过程...

Validations Per-attribute validations Per-attribute validators and allowNull Model-wide validations Validations Model validations allow you to specify format/content/inherit...

MariaDB MariaDB Library for MariaDB is mariadb . const sequelize = new Sequelize ( 'database' , 'username' , 'password' , { dialect : 'mariadb' , diale...