我如何使用 TypeORM 的 QueryBuilder 编写此查询？

Question

我直接在 mySQL 服务器上运行这段代码，我得到了想要的结果，现在我如何使用 typeORM 的 queryBuilder 在我的代码中复制它？

SELECT user.id, user.email, user.image, user.phone_number, 
user.merchantLocationId, ugg.userGroupsId AS groupId, ug.description AS 
groupName, ur.id as roleId, ur.description AS role_name, ugr.priviledges
FROM ipay.user, ipay.user_user_group_user_groups AS ugg, 
ipay.user_group_roles AS ugr, ipay.user_groups AS ug, 
ipay.user_roles AS ur
WHERE user.id = ugg.userId AND ugg.userGroupsId = ugr.group_id AND 
ugr.role_id = ur.id AND user.email = "press@xyz.com";

Answer 1

将这种查询转换为 typeorm 有点困难。我能给出的最接近的例子是这样的

@Injectable()
export class UserService {
  constructor(@InjectRepository(User) private readonly userRepository: Repository<User>) {}

  async findUserByEmail(email: string): Promise<User | null> {
    return await this.userRepository({
      relations: ['roles', 'groups'],
      where: {
        email,
      },
    });
  }
}

您的 UserEntity 看起来像这样

@Entity()
export class User {
  @PrimaryGeneratedColumn()
  id: number;

  @Column({
    unique: true,
  })
  email: string;

  @ManyToMany(type => Group, group => group.users)
  groups: Group[];

  @ManyToOne(type => Role, role => role.users)
  role: Role;
}

这不是完全匹配，但希望能让您深入了解如何实现查询。

我如何使用 TypeORM 的 QueryBuilder 编写此查询？

How do i write this query using TypeORM's QueryBuilder?

mysql

typescript

typeorm

nestjs