我在elasticsearch(1.5)中的文档看起来像:
rake db:setup
我想获得每个性别名称的所有值的总和。那样:
{
"gender": [
{
"name": "unknown",
"value": 12
},
{
"name": "male",
"value": 89
},
{
"name": "female",
"value": 84
}
]
}
我尝试了这个查询:
{
"buckets": [
{
"key": "unknown",
"doc_count": 112,
"gender_a": {
"value": 462
}
},
{
"key": "male",
"doc_count": 107,
"gender_a": {
"value": 438
}
},
{
"key": "female",
"doc_count": 36,
"gender_a": {
"value": 186
}
}
]
}
但是有些奇怪的事情发生了,我没有得到正确的价值观。
知道我错过了什么吗?
答案 0 :(得分:5)
您可能需要确保"gender"
属性的类型为"nested"
。有了这个,我能够做到以下我认为你在做的事情。
首先我设置了一个简单的索引:
PUT /test_index
{
"mappings": {
"doc": {
"properties": {
"gender": {
"type": "nested",
"properties": {
"name": {
"type": "string"
},
"value": {
"type": "long"
}
}
}
}
}
}
}
然后添加了几个文档:
PUT /test_index/doc/1
{
"gender": [
{
"name": "unknown",
"value": 12
},
{
"name": "male",
"value": 89
},
{
"name": "female",
"value": 84
}
]
}
PUT /test_index/doc/2
{
"gender": [
{
"name": "male",
"value": 8
},
{
"name": "female",
"value": 4
}
]
}
然后我可以按性别名称获得总计数如下:
POST /test_index/_search?search_type=count
{
"aggs": {
"genders": {
"nested": {
"path": "gender"
},
"aggs": {
"gender_terms": {
"terms": {
"field": "gender.name"
},
"aggs": {
"gender_name_value_sums": {
"sum": {
"field": "gender.value"
}
}
}
}
}
}
}
}
...
{
"took": 1,
"timed_out": false,
"_shards": {
"total": 1,
"successful": 1,
"failed": 0
},
"hits": {
"total": 2,
"max_score": 0,
"hits": []
},
"aggregations": {
"genders": {
"doc_count": 5,
"gender_terms": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "female",
"doc_count": 2,
"gender_name_value_sums": {
"value": 88,
"value_as_string": "88.0"
}
},
{
"key": "male",
"doc_count": 2,
"gender_name_value_sums": {
"value": 97,
"value_as_string": "97.0"
}
},
{
"key": "unknown",
"doc_count": 1,
"gender_name_value_sums": {
"value": 12,
"value_as_string": "12.0"
}
}
]
}
}
}
}
以下是我用来测试它的代码:
http://sense.qbox.io/gist/d4533215806b858aa2cc1565546d167fdec3c973