metrics-aggregations

Assemble a cardinalityAggregation fragment. That is - count the uniq occurences in a field.

Parameters:

Name Type Description

params

Object

Name	Type	Description
`name`	string	the label for the aggregation
`field`	string	the field on which to aggregate and count - can be a dotted path like publisher.field

Source:: aggregations/metrics-aggregations/cardinality-aggregation.js, line 2
See:: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-metrics-cardinality-aggregation.html

Returns:

a query fragment

Example

cardinalityAggregation({ name: '@type', field: '@type.keyword' })