tests/files/search/GET_search_agg_composite_date_histogram.txt


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GET /some-index/_search
{
  "size": 0,
  "aggs": {
    "my_buckets": {
      "composite": {
        "sources": [
          { "date": { "date_histogram": { "field": "timestamp", "calendar_interval": "1d" } } }
        ]
      }
    }
  }
}