如何编写Elasticsearch术语聚合,将整个术语而不是单个标记拆分为多个?例如,我想按州聚合,但以下将新的,约克,泽西和加利福尼亚作为单独的桶,而不是纽约,新泽西和加利福尼亚作为预期的桶:
curl -XPOST "http://localhost:9200/my_index/_search" -d'
{
"aggs" : {
"states" : {
"terms" : {
"field" : "states",
"size": 10
}
}
}
}'
我的用例就像这里描述的那样 https://www.elastic.co/guide/en/elasticsearch/guide/current/aggregations-and-analysis.html 只有一个区别: 在我的情况下,city field是一个数组。
示例对象:
{
"states": ["New York", "New Jersey", "California"]
}
似乎建议的解决方案(将字段映射为not_analyzed)对数组不起作用。
我的映射:
{
"properties": {
"states": {
"type":"object",
"fields": {
"raw": {
"type":"object",
"index":"not_analyzed"
}
}
}
}
}
我试图替换"对象" by" string"但这也不起作用。
答案 0 :(得分:10)
我认为您在聚合中遗漏的所有内容都是"states.raw"
(请注意,由于未指定分析器,因此使用standard analyzer分析"states"
字段; -field "raw"
是"not_analyzed"
)。虽然您的映射可能也值得关注。当我尝试对ES 2.0进行映射时,我遇到了一些错误,但这很有效:
PUT /test_index
{
"mappings": {
"doc": {
"properties": {
"states": {
"type": "string",
"fields": {
"raw": {
"type": "string",
"index": "not_analyzed"
}
}
}
}
}
}
}
然后我添加了几个文档:
POST /test_index/doc/_bulk
{"index":{"_id":1}}
{"states":["New York","New Jersey","California"]}
{"index":{"_id":2}}
{"states":["New York","North Carolina","North Dakota"]}
此查询似乎符合您的要求:
POST /test_index/_search
{
"size": 0,
"aggs" : {
"states" : {
"terms" : {
"field" : "states.raw",
"size": 10
}
}
}
}
返回:
{
"took": 1,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"failed": 0
},
"hits": {
"total": 2,
"max_score": 0,
"hits": []
},
"aggregations": {
"states": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "New York",
"doc_count": 2
},
{
"key": "California",
"doc_count": 1
},
{
"key": "New Jersey",
"doc_count": 1
},
{
"key": "North Carolina",
"doc_count": 1
},
{
"key": "North Dakota",
"doc_count": 1
}
]
}
}
}
这是我用来测试它的代码:
http://sense.qbox.io/gist/31851c3cfee8c1896eb4b53bc1ddd39ae87b173e