大数据Hive的案例-统计出掉线率最高的前10基站

心已赠人 2021-09-20 13:32 187阅读 0赞

**需求：统计出掉线率最高的前10基站**  
数据：  
record\_time：通话时间  
imei：基站编号  
cell：手机编号  
drop\_num：掉话的秒数  
duration：通话持续总秒数  
测试数据：  
[https://download.csdn.net/download/arne\_/11262104][https_download.csdn.net_download_arne_11262104]  
数据格式:  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0FybmVf_size_16_color_FFFFFF_t_70]

--基础数据表
    create table cell_base(
     record_time string,
     imei string,
     cell string,
     ph_num int,
     call_num int,
     drop_num int,
     duration int,
     drop_rate DOUBLE,
     net_type string,
     erl string
    )
    ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
    STORED AS TEXTFILE;
    
    --结果表
    create table cell_drop(
     imei string,
     total_call_num int,
     total_drop_num int,
     d_rate DOUBLE
    )
    ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t'
    STORED AS TEXTFILE;
    
    --加载数据到cell_base
    load data local inpath '/root/cdr_summ_imei_cell_info.csv' OVERWRITE INTO TABLE cell_monitor;
    
    --找出掉线率最高的基站
    from cell_base cm
    insert overwrite table cell_drop
    select cm.imei ,sum(cm.drop_num),sum(cm.duration),sum(cm.drop_num)/sum(cm.duration) d_rate
    group by cm.imei
    sort by d_rate desc;
    
    --查看结果
    select * from cell_drop limit 10;
    +-----------------+------------------+--------------------+---------------------+--+
    | imei      | total_call_num   | total_drop_num            |    d_rate    
    +-----------------+--------------------+-----------------+----------------------+--+
    | 639876          | 1           | 734                       | 0.0013623978201634877  |
    | 356436          | 1           | 1028                      | 9.727626459143969E-4   |
    | 351760          | 1           | 1232                      | 8.116883116883117E-4   |
    | 368883          | 1           | 1448                      | 6.906077348066298E-4   |
    | 358849          | 1           | 1469                      | 6.807351940095302E-4   |
    | 358231          | 1           | 1613                      | 6.199628022318661E-4   |
    | 863738          | 2           | 3343                      | 5.982650314089142E-4   |
    | 865011          | 1           | 1864                      | 5.36480686695279E-4    |
    | 862242          | 1           | 1913                      | 5.227391531625719E-4   |
    | 350301          | 2           | 3998                      | 5.002501250625312E-4   |
    +-----------------+--------------------+-------------+------------------------+--+

[https_download.csdn.net_download_arne_11262104]: https://download.csdn.net/download/arne_/11262104
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0FybmVf_size_16_color_FFFFFF_t_70]: /images/20210827/9bc7322ddc4f491791f316f6fa65ee15.png