基于嵌套键值数组对弹性搜索查询进行排序 [英] Sort elastic search query based on a nested key value array
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问题描述
我有一个json
I have a json
{
"uniqueKey": "918084",
"dataValue": {
"metadata": {
"timestamps": [{
"key": "startTime",
"value": "2017-02-07T18:00:00-06:00"
}, {
"key": "processedTime",
"value": "2017-02-07T18:05:00-06:00"
}]
}
}
}
我必须编写一个查询以对startTime进行排序。有谁能在弹性搜索中为此编写查询。 dataValue是一个嵌套字段。
I have to write a query to sort on startTime. Does anyone how I can write a query for this in elastic search. dataValue is a nested field.
推荐答案
您可以对 nested_path 使用 sort >。
假设您具有以下映射:
You can use sort with nested_path.
Suppose you have the following mapping:
{
"test-so": {
"mappings": {
"with-dates": {
"properties": {
"datavalue": {
"type": "nested",
"properties": {
"metadata": {
"type": "nested",
"properties": {
"timestamps": {
"type": "nested",
"properties": {
"key": {
"type": "keyword"
},
"value": {
"type": "date",
"format": "date_optional_time"
}
}
}
}
}
}
},
"uniquekey": {
"type": "keyword"
}
}
}
}
}
}
您可以使用排序,如下所示:
You can use sort as follow:
GET /test-so/with-dates/_search
{
"query": {
"nested": {
"path": "datavalue.metadata.timestamps",
"query": {
"term": {
"datavalue.metadata.timestamps.key": {
"value": "startTime"
}
}
}
}
},
"sort": [
{
"datavalue.metadata.timestamps.value": {
"order": "desc",
"nested_path": "datavalue.metadata.timestamps"
}
}
]
}
这将返回按日期在 startTime 上订购的文档。
希望这样做帮助,也许映射不完全相同。 (注意:已在Elastic 5.1上测试)。
That will return the documents ordered by the date on startTime.
Hope this help, maybe the mapping is not exactly the same. (note: tested on Elastic 5.1).
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