在彈性搜索結果中避免重複

Question

我有以下數據我想避免結果中出現重複的練習區域名稱如何避免重複搜索結果中的重複項。請寄給我解決方案。

Array 
(
    [0] => Array 
     (
      [_index] => vendors 
      [_type] => practiceareas 
      [_id] => 240 
      [_score] => 
      [_source] => Array 
       (
        [practice_area_id] => 237 
        [id] => 240 
        [practice_area_name] => Anemia 
        [practice_area_image] => 
        [created_date] => 2016-07-04 14:51:46 
        [status] => 1 
        [industry_id] => 9 
        [category_id] => 14 
        [vendors_count] => 26 
        [services_count] => 0 
        [products_count] => 0 
       ) 

      [sort] => Array 
       (
        [0] => 26 
       ) 

     ) 

    [1] => Array 
     (
      [_index] => vendors 
      [_type] => practiceareas 
      [_id] => 582 
      [_score] => 
      [_source] => Array 
       (
        [practice_area_id] => 364 
        [id] => 582 
        [practice_area_name] => Joint Pains 
        [practice_area_image] => 
        [created_date] => 2016-07-04 14:51:47 
        [status] => 1 
        [industry_id] => 9 
        [category_id] => 12 
        [vendors_count] => 26 
        [services_count] => 0 
        [products_count] => 0 
       ) 

      [sort] => Array 
       (
        [0] => 26 
       ) 

     ) 

    [2] => Array 
     (
      [_index] => vendors 
      [_type] => practiceareas 
      [_id] => 1315 
      [_score] => 
      [_source] => Array 
       (
        [practice_area_id] => 237 
        [id] => 1315 
        [practice_area_name] => Anemia 
        [practice_area_image] => 
        [created_date] => 2016-07-04 14:51:46 
        [status] => 1 
        [industry_id] => 9 
        [category_id] => 15 
        [vendors_count] => 26 
        [services_count] => 0 
        [products_count] => 0 
       ) 

      [sort] => Array 
       (
        [0] => 26 
       ) 

     ) 
) 

謝謝。

Answer 1

您可能喜歡使用Field Collapsing來顯示按特定字段分組的搜索結果。按名稱分組意味着需要術語聚合。

爲了能夠在'practice_area_name'上進行分組，該字段應該在其原始not_analyzed表單中可用。否則，您應該在'practice_area_id'上進行分組以避免not_analyzed字段。

"aggs": { 
    "vendors": { 
     "terms": { 
     "field": "practice_area_name" 
     }, 
     "aggs": { 
     "dedup_docs": { "top_hits": { "size": 1 }} 
     } 
    } 
    } 

注：top_score聚集訂單在每個桶中得分最高的文檔的用戶聚集的條款。