Elasticsearch match element in array

Question

Given this data:

[
  {
    "tags": [
      "food"
    ]
  },
  {
    "tags": [
      "food features"
    ]
  }
]

And index mapping

{
  "mappings": {
    "properties": {
      "tags": {
        "type": "text",
        "fields": {
          "keyword": {
            "type": "keyword",
            "ignore_above": 256
          }
        }
      }
    }
  }
}

How can I build a query that returns matched tags [food] and [food features] when I searched for [food] tag, but when I search for food features tag, only [food features] tag is returned? Thanks.

I'm facing the same problem.

logbasex
– logbasex

2021-11-22 09:03:21 +00:00
Commented Nov 22, 2021 at 9:03 — logbasex
– logbasex, Commented Nov 22, 2021 at 9:03

Val · Accepted Answer · 2021-11-22 09:12:26Z

1

A prefix query on the tags.keyword field could do the job:

{
  "query": {
    "prefix": {
      "tags.keyword": "food"
    }
  }
}

answered Nov 22, 2021 at 9:12

Val

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2 Comments

Anh Ho Phi Duc Over a year ago

Thanks. But in case of the index with a document with tags: [food features A], this solution doesn't work.

Val Over a year ago

Not sure what you mean. Can you update your question with a sample document and the query you think won't work?

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