query specific fields by document type

Question

I am currently getting started with Elasticsearch and I am trying to build a search query that looks for a keyword in different fields, dependent on the document type.

Example:

Index Name: index1

Document types:

• doc1 (_id, name, size, color, weight)
• doc2 (_id, name, duration, length, width, height)

Now I want to query index1 for documents of types doc1 and doc2, but indoc1 I only want to search in columns name, size and weight, whilst in doc2 I want to search in columns name, length and height.

How can I achieve this in a single query?

Answer 1

You can refer to the fields by type and name and use a bool query. A basic example is below.

{
    "query": {
        "bool": {
            "should": [
               {
                   "bool": {
                       "must": [
                          {
                              "term": {
                                 "doc1.name": {
                                    "value": "2"
                                 }
                              }
                          },
                          {
                              "term": {
                                 "doc1.size": {
                                    "value": "23"
                                 }
                              }
                          },
                          {
                              "term": {
                                 "doc1.weight": {
                                    "value": "52"
                                 }
                              }
                          }
                       ]
                   }
               },
               {
                   "bool": {
                       "must": [
                          {
                               "term": {
                                 "doc2.name": {
                                    "value": "2"
                                 }
                              }
                          },
                          {
                              "term": {
                                 "doc2.length": {
                                    "value": "23"
                                 }
                              }
                          },
                          {
                              "term": {
                                 "doc2.height": {
                                    "value": "52"
                                 }
                              }
                          }
                       ]
                   }
               }
            ]
        }
    }
}