typeorm like
时间: 2023-09-04 14:17:27 浏览: 56
TypeORM is an Object-Relational Mapping (ORM) library for TypeScript and JavaScript. It allows you to interact with relational databases using object-oriented programming paradigms. With TypeORM, you can define your database entities as classes and perform database operations using a variety of methods and query builders.
TypeORM provides a rich set of features, including support for various database systems such as MySQL, PostgreSQL, SQLite, and more. It supports entity relationships, migrations, transactions, and complex queries. You can use decorators to define entity properties, relationships, and other metadata.
Here's an example of how you can use TypeORM to define an entity and perform basic CRUD operations:
```typescript
import { Entity, Column, PrimaryGeneratedColumn, getConnection } from 'typeorm';
@Entity()
class User {
@PrimaryGeneratedColumn()
id: number;
@Column()
name: string;
@Column()
email: string;
}
// Inserting a new user
const user = new User();
user.name = 'John Doe';
user.email = 'john.doe@example.com';
await getConnection().getRepository(User).save(user);
// Retrieving users
const users = await getConnection().getRepository(User).find();
// Updating a user
user.name = 'Jane Smith';
await getConnection().getRepository(User).save(user);
// Deleting a user
await getConnection().getRepository(User).delete(user);
```
This is just a basic example, and TypeORM provides many more advanced features such as query builders, eager loading of relationships, and more. You can refer to the TypeORM documentation for more detailed information on how to use it.