1、基础数据

GET /my-index/_search{"took": 1,"timed_out": false,"_shards": {"total": 5,"successful": 5,"skipped": 0,"failed": 0},"hits": {"total": 2,"max_score": 1,"hits": [{"_index": "my-index","_type": "person","_id": "5","_score": 1,"_source": {"name": "kobe","age": 28,"salary": 10000}},{"_index": "my-index","_type": "person","_id": "6","_score": 1,"_source": {"name": "hadron","age": 19,"salary": 5000}}]}
}

2、max

GET /my-index/_search
{"size": 1,"aggs": {"max_age": {"max": {"field": "age"}}}
}{"took": 1,"timed_out": false,"_shards": {"total": 5,"successful": 5,"skipped": 0,"failed": 0},"hits": {"total": 2,"max_score": 1,"hits": [{"_index": "my-index","_type": "person","_id": "5","_score": 1,"_source": {"name": "kobe","age": 28,"salary": 10000}}]},"aggregations": {"max_age": {"value": 28}}
}

3、min

GET /my-index/_search
{"size": 2,"aggs": {"min_age": {"min": {"field": "age"}}}
}

4、avg

GET /my-index/_search
{"size": 2,"aggs": {"avg_age": {"avg": {"field": "age"}}}
}

5、sum

GET /my-index/_search
{"size": 20,"aggs": {"sum_salary": {"sum": {"field": "salary"}}}
}

6、 stat

GET my-index/_search
{"size": 0, "aggs": {"stats_salary": {"stats": {"field": "salary"}}}
}{"took": 1,"timed_out": false,"_shards": {"total": 5,"successful": 5,"skipped": 0,"failed": 0},"hits": {"total": 2,"max_score": 0,"hits": []},"aggregations": {"stats_salary": {"count": 2,"min": 5000,"max": 10000,"avg": 7500,"sum": 15000}}
}

7、高级统计

GET my-index/_search
{"size": 0, "aggs": {"stats_salary": {"extended_stats": {"field": "salary"}}}
}{"took": 0,"timed_out": false,"_shards": {"total": 5,"successful": 5,"skipped": 0,"failed": 0},"hits": {"total": 2,"max_score": 0,"hits": []},"aggregations": {"stats_salary": {"count": 2,"min": 5000,"max": 10000,"avg": 7500,"sum": 15000,"sum_of_squares": 125000000,"variance": 6250000,"std_deviation": 2500,"std_deviation_bounds": {"upper": 12500,"lower": 2500}}}
}

8、文档数量统计

GET my-index/_search
{"size": 0, "aggs": {"doc_count": {"value_count": {"field": "salary"}}}
}{"took": 1,"timed_out": false,"_shards": {"total": 5,"successful": 5,"skipped": 0,"failed": 0},"hits": {"total": 3,"max_score": 0,"hits": []},"aggregations": {"doc_count": {"value": 2}}
}

9、百分位统计

GET my-index/_search
{"size": 0, "aggs": {"persion_salary": {"percentiles": {"field": "salary"}}}
}{"took": 1,"timed_out": false,"_shards": {"total": 5,"successful": 5,"skipped": 0,"failed": 0},"hits": {"total": 3,"max_score": 0,"hits": []},"aggregations": {"persion_salary": {"values": {"1.0": 5000,"5.0": 5000,"25.0": 5000,"50.0": 7500,"75.0": 10000,"95.0": 10000,"99.0": 10000}}}
}