hello, 请问下，我有三个表，collections， users, user_collection, users和 collections是多对多的关系， 根据id查collection，同时查出这个collection的users， 如下

@Entity({name: 'users'})
export class User {
    @PrimaryGeneratedColumn()
    id: number;

    @Column('varchar', { length: 100 })
    username: string;

    @ManyToMany(type => Collection, collection => collection.users)
    @JoinTable({
        name: 'user_collection',
        joinColumn: {
            name: 'user_id',
            referencedColumnName: 'id',
        },
        inverseJoinColumn: {
            name: 'collection_id',
            referencedColumnName: 'id',
        },
    })
    collections: Collection[];
	
	...
	

@Entity({name: 'collections'})
export class Collection {
    @PrimaryGeneratedColumn()
    id: number;

    @ManyToMany(type => User, user => user.collections)
    users: User[];
	
	...
	

查询代码如下，这样查询，会得到user的所有字段，如果只想查询user的部分字段，如id, username的话，应该怎么写呢？

await this.collectionRepository.findOne({
        select: ['id', 'name', 'coverURL', 'announcement', 'allowPost', 'postMustAudit', 'creator'],
        where: { id },
        relations: [ 'users' ],
});