Terms Aggregation

• Aggregation query syntax:

  curl -XPOST 'localhost:9200/ordering/order/_search?pretty=true' -d '
  {
  "size": 0, 
  "aggregations": {
    "order-status": {
      "terms": {
        "field": "status.keyword"
      }
    }
  }
  }'
  

• "size": 0 - suppress query results to fetch aggregations results only
• "aggregations" or "aggs" - part of ElasticSearch Dsl
• "order-status" - arbitrary name for aggregation
• "terms" - type of aggregation to use
• "status.keyword" - multi-field mapping for "status" property of json document