Elasticsearch 返回大于指定范围的结果

Question

I'm use Elasticsearch (Version: 6.8.4) with MongoDB (4.0.3)

I want find all the documents where price between 1 and 800 and sale_date is greater than Date.now(), but I have problem with my query:

{
  "query": {
    "bool": {
      "must": [],
      "filter": {
        "term": { 
          "sold_out": false 
        },
        "bool": {
          "should": [
            {
              "range": {
                "sale_date": {
                  "gt": Date.now()
                }
              }
            },
            {
              "range": {
                "price": {
                  "gt": 1,
                  "lte": 800
                }
              }
            }
          ]
        }
      }
    }
  },
  "from": 10,
  "size": 200
}

It's query returns me results with products where some of them have price greater than 800

Price field stored in Elasticsearch as long

Whant I'm try:

• use from: to: and got the same results
• change "should" to "must" in filter and it's returns empty results
• remove from query { "range": { "sale_date": { "gt": Date.now(), } } } and it's returns right results!

What I'm doing wrong ?

Answer 1

First remove the uneccessary nesting ofthe two bool objects, try having all the clauses in the same "bool" field like this.

Remeber that with must a document must have the term you are making a comparison on to be included in the result, with should a match will only improve the score, if the condition is met, so in a certain sense must is like AND and should similar to an OR .

In your example changing the filter from should to must made the query return nothing maybe because you don't have any element that has both the date and price you want, or maybe it was the problem was the bool nesting.

Try this:

{
  "query": {
    "bool": {
      "must": [{
        "range": {
          "sale_date": {
            "gt": Date.now()
          }
        }
      },
      {
        "range": {
          "price": {
            "gt": 1,
            "lte": 800
          }
        }
      }],
        "filter": {
        "term": {
          "sold_out": false
        },
      }
    }
  },
  "from": 10,
  "size": 200
}

This will only get the elements with price lte 800 and sale_date gt Date.now().

Answer 2

将 Date().now() 更改为“gt”：“now/d”。