[英]Elasticsearch query for distinct values with multiple conditions
I want to perform following in the elasticsearch.我想在 elasticsearch 中执行以下操作。
select distinct name, city from students where class = 10 and age = 15; select 不同的名字,城市来自学生,其中 class = 10 和年龄 = 15;
and it should return all distinct values for name and city.它应该返回名称和城市的所有不同值。 How to perform this?如何执行此操作?
https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-body.html#request-body-search-collapse . https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-body.html#request-body-search-collapse 。 Field collapsing Should be helpful here.字段折叠在这里应该会有所帮助。
{
"query": {
"bool": {
"must": [
{"match":
{
"class": 10
}
},
{"match":
{
"age": 15
}
}
]
}
},
"collapse" : {
"field" : "name.keyword" ,
"inner_hits" : {
"name": "by_type",
"collapse" : {"field" : "city.keyword"}
}
},
"size": 100
}
The above query will return one document par name and city after matching with class and age.上述查询在匹配 class 和年龄后,将返回一个文档名称和城市。
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