Typeorm_使用getRawMany 无法分页

Google半天没啥结果，最后把分页换成了 limit和offset 组合

const topic = this
      .createQueryBuilder('post')
      .leftJoinAndSelect(Topic, 'topic', 'post.topic_id = topic.id')
      .select('topic.id, topic.name')
      .addSelect('SUM(1)', 'count')
      .groupBy('post.topic_id')
      .addGroupBy('topic.id')
      .where('post.topic_id is not null AND post.status = :status', { status: PostStatus.Active })
      .orderBy('count', sortBy)
      // .skip(pageIndex * pageSize)
      // .take(pageSize)
      .limit(pageSize)
      .offset(pageIndex * pageSize)
      .getRawMany();