python 使用 elasticsearch 常用方法（聚合）

Posted 2022-11-26 loveyouyou616

#记录聚合查询方法

from elasticsearch import Elasticsearch

es = Elasticsearch([‘xx.xx.xx.xx:9200‘])


#获取最小的年龄
res = es.search(index=‘test6‘, body = 
    "query": 
        "match_all": 
    ,
    "aggs": 
        "min_age": 
            "min": 
                "field": "age"
            
        
    
)
print(res[‘aggregations‘][‘min_age‘][‘value‘])


#获取最大的年龄
res = es.search(index=‘test6‘, body = 
    "query": 
        "match_all": 
    ,
    "aggs": 
        "max_age": 
            "max": 
                "field": "age"
            
        
    
)
print(res[‘aggregations‘][‘max_age‘][‘value‘])


#获取年龄和
res = es.search(index=‘test6‘, body = 
    "query": 
        "match_all": 
    ,
    "aggs": 
        "sum_age": 
            "sum": 
                "field": "age"
            
        
    
)
print(res[‘aggregations‘][‘sum_age‘][‘value‘])


#获取平均年龄
res = es.search(index=‘test6‘, body = 
    "query": 
        "match_all": 
    ,
    "aggs": 
        "avg_age": 
            "avg": 
                "field": "age"
            
        
    
)
print(res[‘aggregations‘][‘avg_age‘][‘value‘])

# from、size
#from：从“第几条”开始查询, size：查询多少条
res = es.search(index=‘test6‘, body = 
    "query": 
        "match_all": 
    ,
    "size": 1,
    "from": 2
)
print(res)