[英]Elasticsearch filter/count nested fields
I have documents with a nested field that looks like this:我有一个嵌套字段的文档,如下所示:
...
"results": [
{
"id": "1234",
"name": "asdf"
},
{
"id": "5678",
"name": "jklö"
}
],
"ip": "1.2.3.4"
...
The mapping for the nested field looks like this:嵌套字段的映射如下所示:
"results": {
"type": "nested",
"properties": {
"id": {
"type": "string"
},
"name": {
"type": "string"
}
}
}
Before I switched to elasticsearch 2 I had a query with aggs that counted the documents that had no results.在我切换到 elasticsearch 2 之前,我有一个 aggs 查询,它计算没有结果的文档。 Here's the aggregation part of the query:
这是查询的聚合部分:
"aggs": {
"no_result": {
"filter": {
"missing": {
"field": "results"
}
},
"aggs": {
"count": {
"value_count": {
"field": "ip"
}
}
}
}
}
Now that I switched to elasticserach 2 it just counts all documents.现在我切换到 elasticserach 2 它只计算所有文档。 I already tried different things like counting all documents and counting results so that I can subtract the results but
我已经尝试过不同的事情,例如计算所有文档和计算结果,以便我可以减去结果,但是
"aggs": {
"results_count": {
"value_count": {
"field": "results"
}
}
}
Is always 0总是 0
How can I correctly filter/count my nested fields?如何正确过滤/计算嵌套字段?
if you want to count the number of documents which have results you can do this.如果你想计算有结果的文档数量,你可以这样做。
{
"size": 0,
"aggs": {
"count": {
"nested": {
"path": "results"
},
"aggs": {
"top_reverse_nested": {
"reverse_nested": {}
}
}
}
}
}
the number count will be in top_reserve_nested doc_count数量计数将在 top_reserve_nested doc_count 中
"field": "ip" “字段”:“IP”
should be "field": "id"应该是“字段”:“id”
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