4.1 指标聚合 ★★★

示例

DELETE recipes

PUT recipes

POST /recipes/_mapping
{
  "properties": {
    "name":{
      "type": "text"
    },
    "rating":{
      "type": "float"
    },"type":{
      "type": "keyword"
    }
  }
}

POST _bulk
{ "index":  { "_index": "recipes" }}
{"name":"清蒸鱼头","rating":1,"type":"湘菜"}
{ "index":  { "_index": "recipes" }} 
{"name":"剁椒鱼头","rating":2,"type":"湘菜"}
{ "index":  { "_index": "recipes" }} 
{"name":"红烧鲫鱼","rating":3,"type":"湘菜"}
{ "index":  { "_index": "recipes" }} 
{"name":"鲫鱼汤（辣）","rating":3,"type":"湘菜"}
{ "index":  { "_index": "recipes" }} 
{"name":"鲫鱼汤（微辣）","rating":4,"type":"湘菜"}
{ "index":  { "_index": "recipes" }} 
{"name":"鲫鱼汤（变态辣）","rating":5,"type":"湘菜"}
{ "index":  { "_index": "recipes" }} 
{"name":"广式鲫鱼汤","rating":5,"type":"粤菜"}
{ "index":  { "_index": "recipes" }} 
{"name":"鱼香肉丝","rating":2,"type":"川菜"}
{ "index":  { "_index": "recipes" }} 
{"name":"奶油鲍鱼汤","rating":2,"type":"西菜"}


POST recipes/_search
{
  "query": {"match": {
    "name": "鱼"
  }},"size": 10
}

POST recipes/_search
{
    "query": {
        "match": {
            "name": "鲫鱼"
        }
    },
    "sort": [{
        "rating": {
            "order": "desc"
        }
    }],
    "size": 10
}

POST recipes/_search
{
    "query": {
        "match": {
            "name": "鱼"
        }
    },
    "sort": [{
        "rating": {
            "order": "desc"
        }
    }],
    "size": 3
}



GET recipes/_search
{
  "query": {
    "match": {
      "name": "鱼"
    }
  },
  "sort": [
    {
      "rating": {
        "order": "desc"
      }
    }
  ],"aggs": {
    "type": {
      "terms": {
        "field": "type",
        "size": 10
      },"aggs": {
        "rated": {
          "top_hits": {
            "sort": [{
              "rating": {"order": "desc"}
            }], 
            "size": 1
          }
        }
      }
    }
  }, 
  "size": 0,
  "from": 0
}

GET recipes/_search
{
    "aggs": {
        "max_value": {
            "max": {
                "field": "rating"
            }
        }
    },
    "size": 0
}

GET recipes/_search
{
    "aggs": {
        "min_value": {
            "min": {
                "field": "rating"
            }
        }
    },
    "size": 0
}

GET recipes/_search
{
    "aggs": {
        "avg_value": {
            "avg": {
                "field": "rating"
            }
        }
    },
    "size": 0
}

GET recipes/_search
{
    "aggs": {
        "sum_value": {
            "sum": {
                "field": "rating"
            }
        }
    },
    "size": 0
}

GET recipes/_search
{
    "aggs": {
        "type_count": {
            "cardinality": {
                "field": "type"
            }
        }
    },
    "size": 0
}

GET recipes/_search
{
    "aggs": {
        "stat": {
            "stats": {
                "field": "rating"
            }
        }
    },
    "size": 0
}


GET recipes/_search
{
    "aggs": {
        "extended_stats": {
            "extended_stats": {
                "field": "rating"
            }
        }
    },
    "size": 0
}

GET recipes/_search
{
    "aggs": {
        "percentiles": {
            "percentiles": {
                "field": "rating"
            }
        }
    },
    "size": 0
}

GET recipes/_search
{
    "aggs": {
        "value_count": {
            "value_count": {
                "field": "rating"
            }
        }
    },
    "size": 0
}