To search we use a large set of documents and our interest here lies only in a subset of this document set. This can be based on a set of constraints and conditions. A search does not stop here. You might be interested in getting a snapshot view of your query result. In our case, if the user searches for dell, he/she might be interested in seeing different unique product types and their document count. This is called an aggregation. Through this, we enhance our search experience and make it more explorable. Here, we try to discover various querying options through which we can express our requirement and communicate the same to Elasticsearch.

In our search application, we expose a search box that can be used for a search. We abstract out information about which field is searched or what is the precedence of the fields that we search. Let's see the query types that would be best for this search box.