保留ElasticSearch查询中的条款顺序 [英] Preserving order of terms in ElasticSearch query

问题描述

一个简单的例子是使用标准分析器对这些文档进行索引：

ElasticSearch中是否可能形成一个保留条款顺序的查询。 / p>

1. 你知道搜索


2. 你知道搜索


3. 知道搜索你

我可以查询 +你+搜索将给我所有的文件，包括第三个。

如果我只想检索具有这个特定顺序的条款的文件怎么办？我可以形成一个对我来说的查询？

考虑到短语可以通过简单的引用文本：你知道 / code>（检索第一和第二个文档）感觉对我来说，应该有一种方式来保持与不相邻的多个条款的顺序。

在上面的简单示例中，我可以使用邻近搜索，但这不包括更复杂的情况。

解决方案

您可以使用一个 span_near 查询，它有一个 in_order 参数。

  {
查询：{
span_near：{
子句：[
 {
span_term ：{
field：你
} 
}，
 {
span_term：{
field：search
} 
} 
]， 
slop：2，
in_order：true 
} 
} 
} 
  

Is it possible in ElasticSearch to form a query that would preserve the ordering of the terms?

A simple example would be having these documents indexed using standard analyzer:

1. You know for search
2. You know search
3. Know search for you

I could query for +you +search and this would return me all documents, including the third one.

What if I wanted to only retrieve the documents which have the terms in this specific order? Can I form a query that would do that for me?

Considering it is possible for phrases by simply quoting the text: "you know" (retrieve 1st and 2nd docs) it feels to me like there should be a way of preserving the order for multiple terms that aren't adjacent.

In the above simple example I could use proximity searches, but this doesn't cover more complex cases.

解决方案

You could use a span_near query, it has a in_order parameter.

{
    "query": {
        "span_near": {
            "clauses": [
                {
                    "span_term": {
                        "field": "you"
                    }
                },
                {
                    "span_term": {
                        "field": "search"
                    }
                }
            ],
            "slop": 2,
            "in_order": true
        }
    }
}

这篇关于保留ElasticSearch查询中的条款顺序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！