[source, ruby]
----
response = client.search(
  index: 'sales',
  size: 0,
  body: {
    aggregations: {
      range: {
        date_range: {
          field: 'date',
          format: 'MM-yyy',
          ranges: [
            {
              from: '01-2015',
              to: '03-2015',
              key: 'quarter_01'
            },
            {
              from: '03-2015',
              to: '06-2015',
              key: 'quarter_02'
            }
          ],
          keyed: true
        }
      }
    }
  }
)
puts response
----
