elasticsearch - 从弹性搜索索引中检索唯一文档

Question

如何从索引中获取所有唯一文档。我需要为文档的所有字段编写聚合查询吗？我可以在不为每个字段编写聚合的情况下获得唯一的文档吗？

Answer 1

你可以用脚本做到这一点：

    PUT test/doc/1 
{ "field1": "value1", "field2": "value2" }

 PUT test/doc/2 { "field1": "value2", "field2": "value3" } 

PUT test/doc/3 { "field1": "value1", "field2": "value3" } PUT test/doc/4 { "field1": "value3", "field2": "value4" }

 GET test/_search { "size": 0, "aggs": { "cardinality": { "cardinality": { "script": { "inline": "[ doc['field1'].value, doc['field2'].value ]" } } } } }

从讨论弹性