流在 elasticsearch 查询中是如何工作的？

Question

我写了一个查询，它有几个条件，如下所示。

     GET /agreement/_search
        {
          "query": {
            "bool": {
              "must": [
                {
                  "multi_match": {
                    "query": "T-0668",
                    "fields": [
                      "agreecondition.agreementId",
                      "agreecondition.conditionContractId"
                    ]
                  }
                },
    ,
            {
              "range": {
                "agreecondition.validFrom": {
                  "gte": "02/18/2019"
                }
              }
            },
            {
              "range": {
                "agreecondition.validTo": {
                  "lte": "03/07/2019"
                }
              }
            }
              ],
              "filter": [
                {
                  "terms": {
                    "agreecondition.promotionId.keyword": [
                    "x",
"y"
                    ]
                  }
                }
              ]
            }
          }
        }

我的问题是流程是如何运作的？

Ex: ES 是否先获取 must 条件的多匹配的结果，并且在多匹配的输出上，范围条件是否适用？然后是过滤器（在范围条件的输出之上）？

我只是想弄清楚这一点，如果我的假设是错误的，那么我需要重新编写查询。

Answer 1

您可以检查 elasticsearch official blog on query execution order 以详细了解这一点，但由于博客末尾提到的 elastic put 限制，您可能无法获得所需的所有详细信息：

Q: How can I check which query/filter got executed first?

A：我们并没有真正公开这些信息，这是非常内部的。但是如果你

check the output of the profile API, you can count how many times nextDoc/advance have been called on the one hand, and matches on the other hand. Query nodes that have the higher counts have been run first.

注意：Profile API 也会像博客中建议的那样对您有用。

流在 elasticsearch 查询中是如何工作的？

How does the flow works in elasticsearch queries?

elasticsearch

elasticsearch-dsl