弹性搜索：JSON到NEST查询没有重复

Question

如何将json查询转换为下面的嵌套查询并删除重复项？

{
      "size": 30,
      "query": {
          "multi_match": {
            "query": "london",
            "operator": "OR",
            "fields": [
            "name",
             "venueTown"
            ]
          }
  }
}

Answer 1

您可以稍微简化聚合部分，并将最热门的匹配放在

中

var searchResult = client.Search<SearchResult>(request => request
    // Your existing query below...
    //.Query(q => q)
    .Size(0)
    .Aggregations(a => a
        // simplify the terms aggregation
        .Terms("query", tr => tr
            .Field("name")
            .Size(30)
        )
        // Add the top hits aggregation
        .TopHits("top", th => th
            .Size(1)
        )
    )
);