Exclude a field on a Elasticsearch query

Question

Having the following mapping:

curl -XPUT \'localhost:9200/testidx?pretty=true\' -d \'{
  \"mappings\": {
    \"items\": {
       \"dynamic\": \"strict\",
                


        

Answer 1

Up to elasticsearch 6.0.0 you can set "include_in_all": false to your index field properties, see e.g. https://www.elastic.co/guide/en/elasticsearch/reference/5.5/include-in-all.html.

(This of course needs a reindexing of the data.)

Answer 2

The _source/exclude setting is only useful for not returning the body field in the response, but that doesn't exclude that field from being searched.

What you can do is to specify all the fields you want to search instead (whitelist approach)

curl -XGET 'localhost:9200/testidx/items/_search?pretty=true' -d '{
  "query" : {
     "query_string": {
          "fields": ["title", "field2", "field3"],      <-- add this
          "query": "Titulo"
     }},
     "_source" : {
          "exclude" : ["*.body"]
     }
}'

Another thing you can do is to explicitly specify that body should not be matched with -body:Titulo

curl -XGET 'localhost:9200/testidx/items/_search?pretty=true' -d '{
  "query" : {
     "query_string": {
          "query": "Titulo AND -body:Titulo"                <-- modify this
     }},
     "_source" : {
          "exclude" : ["*.body"]
     }
}'