如何合并来自elasticsearch rails gem的两个或多个结果？

# 执行搜索操作，获取结果集
search_results = Model.search(query)

# 创建聚合对象
aggregations = {
  merged_results: {
    terms: {
      field: 'field_to_group_by'
    },
    aggs: {
      total_count: {
        value_count: {
          field: 'field_to_count'
        }
      },
      average_value: {
        avg: {
          field: 'field_to_average'
        }
      }
    }
  }
}

# 将聚合对象添加到搜索请求中
search_results.aggregations = aggregations

# 执行搜索请求
response = search_results.execute

# 获取合并后的结果
merged_results = response.aggregations.merged_results

# 处理合并后的结果
merged_results.buckets.each do |bucket|
  group_by_value = bucket['key']
  count = bucket.total_count.value
  average = bucket.average_value.value

  # 进行进一步处理或展示
end