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hive数据表之开窗函数

 

 1 //1.1 启动hive服务
 2 
 3 bin/hiveserver2
 4 
 5 //1.2 创建hive数据表
 6 
 7 create database test8;
 8 use test8;
 9 create table test8(
10     cname string,
11     cdate string,
12     spend int
13 )row format delimited fields terminated by ",";
14 
15 //1.3 将数据导入表中
16 
17 load data local inpath '/root/data/spend.txt' into table test8;
18 
19 //1.4 查询在2017年4份购买过的顾客及总人数
20 
21 select * from test8;
22 with
23 a as (select count(0) ct from test8 where cdate like "2017-04%"),
24 b as (select cname from test8 where cdate like "2017-04%")
25 select a.ct,b.cname from a,b;
26 
27 //1.5 查询顾客的购买明细及所以顾客的购买总额所有人的花费求和
28 
29 select cname,cdate,spend,sum(spend)over() from test8 ;
30 
31 //1.6 查询顾客的购买明细以及每位顾客的总花费按人分组求和
32 
33 select cname,cdate,spend,sum(spend)over (partition by cname) from test8 ;
34 
35 //1.7 查询顾客的购买明细及到目前为止每个顾客购买总金额按人分组,按时间排序,花费 累加
36 
37 select  cname,cdate,spend,sum(spend)over (distribute by cname sort by cdate)from test8 ;

 







posted @ 2022-01-14 09:33  CHANG_09  阅读(64)  评论(0编辑  收藏  举报