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Switching Service from Elasticsearch to Typesense

TLDR Sebastian inquires about recreating Elasticsearch Boolean Queries in Typesense. Jason explains that Typesense behaves as should by default and suggests configuring specific must keywords with double quotes.

4mo

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Aug 09, 2023 (4 months ago)

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Sebastian

04:12 PM

Hi! We want to switch a service that uses Elasticsearch Boolean Queries to Typesense. Is it possible to build something similar to the query below in Typesense? We can use filters for must and must_not sections.
What would be the best way to write should queries and to boost some elements of the query over others?

POST _search
{
  "query": {
    "bool" : {
      "must" : {
        "term" : { "user.id" : "kimchy" },
        "boost": 20
      },
      "filter": {
        "term" : { "tags" : "production" }
      },
      "must_not" : {
        "range" : {
          "age" : { "gte" : 10, "lte" : 20 },
          "boost":5
        }
      },
      "should" : [
        { "term" : { "tags" : "env1" } },
        { "term" : { "tags" : "deployed" } }
      ],
      "minimum_should_match" : 1,
      "boost" : 1.0
    }
  }
}

https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-bool-query.html

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Jason

05:52 PM

should is how Typesense behaves by default. It will first look for all terms in the query in the same record, if it doesn’t find enough records (threshold defined by drop_tokens_threshold), it will drop keywords until enough matches are found.

05:53

Jason

05:53 PM

But it’s not possible to specifically indicate which specific keywords are should. The dropping of keywords I mentioned above happens left to right, then right to left

You can configure which keywords should be must by surrounding them with double quotes

Sebastian

09:50 PM

Thank you Jason!

09:50

Sebastian

09:50 PM

Cc Rushil

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