Filter your results based on a date range

With a fair idea in mind of when to use your filter and when to opt for a query, let's think of some scenarios and see how Elasticsearch enables filtering at its best. Filtering by a date range, prize, or department often pops up in use cases in an e-commerce view. Look at the left-hand side of the following figure:

Checking for new arrivals or selecting an old classic song from a library may need a date-range-based filtering mechanism. Elasticsearch provides inbuilt facilities to do filtering by providing a date range filter. A term filter does the same thing for strings, which can be anything for example, a department or category. A numeric filter filters numerals and can be used for prizes and so on.

This snippet shows how you can implement a date-range-based filtering in Elasticsearch:

{
"query" : 
{ "filtered" :
  { "query" :
    { "text" : { "content" : "any keywords to match" }
  },
 "filter" : 
{ "numeric_range" :
 { "date" :
     { "lt" : "2011-02-01", "gte" : "2011-01-01" 
      }
   }
  }
 }

These are the parameters taken in a range filter that you may use to specify range offsets: