用于过滤 top_hits 的弹性搜索查询
Elastic search query for filtering on top_hits
假设，我有一个 table，格式如下：
sdk_index {device_id, serve_count, event_time}
我想做一个弹性搜索查询，它给我的结果是
1. group by device id and take the max(event_time)
2. on the result of 1 check for rows with serve_count > 0 and return the count.
不允许对聚合进行分析。此功能请求已关闭：feature request for reducers
假设，我有一个 table，格式如下：
sdk_index {device_id, serve_count, event_time}
我想做一个弹性搜索查询，它给我的结果是
1. group by device id and take the max(event_time)
2. on the result of 1 check for rows with serve_count > 0 and return the count.
不允许对聚合进行分析。此功能请求已关闭：feature request for reducers