// This file is autogenerated, DO NOT EDIT
// aggregations/bucket/composite-aggregation.asciidoc:796

[source, python]
----
resp = client.search(
    size=0,
    aggs={
        "my_buckets": {
            "composite": {
                "sources": [
                    {
                        "user_name": {
                            "terms": {
                                "field": "user_name"
                            }
                        }
                    },
                    {
                        "date": {
                            "date_histogram": {
                                "field": "timestamp",
                                "calendar_interval": "1d",
                                "order": "desc"
                            }
                        }
                    }
                ]
            }
        }
    },
)
print(resp)
----
