Executing term statistical facets

The term statistical facets unifies both term and statistical facets in a single one. This kind of facet is used to aggregate values using a field and compute statistic on another one.

This covers a lot of common scenarios required in facets that are generally referred as value X for feature Y.

Getting ready

You need a working ElasticSearch cluster and an index populated with the script available in online code.

How to do it...

For executing term statistical facets, we will perform the steps given as follows:

1. We need to compute the price as the function of available tags.

2. To reach our goal we need to write a request similar to the following code:

   curl -XGET 'http://127.0.0.1:9200/test-index/test-type/_search?pretty=true&size=0' -d '{
       "query": {
           "match_all": {}
       },
       "facets": {
           "price_for_tag" : {
               "terms_stats" : {
                   "key_field" : "tag",
                   "value_field" : "price"
               }
           }
       }...