hive复合数据类型map

复合数据类型map

数据如下

1,zhangsan,father:xiaoming#mother:xiaohuang#brother:xiaoxu,28

2,lisi,father:mayun#mother:huangyi#brother:guanyu,22

3,wangwu,father:wangjianlin#mother:ruhua#sister:jingtian,29

4,mayun,father:mayongzhen#mother:angelababy,26

建表

create table t_family(id int, name string, family_members map<string,string>, age int)

row format delimited fields terminated by ‘,‘

collection items terminated by ‘#‘

map keys terminated by ‘:‘; -----注意!!!!

插入数据

load data local inpath ‘/home/map.txt‘ into table t_family;

查出每个人的爸爸

select id,name,family_members["father"] from t_family;

查出每个人有哪些亲属关系

select id,name,map_keys(family_members) as ralations from t_family;

查出每个人的亲人名字

select id,name,map_values(family_members) as ralations from t_family;

查出每个人的亲人数量

select id,name,size(family_members) as relations,age

from t_family;

查出所有拥有兄弟的人及他的兄弟是谁

select id,name,age, family_members["brother"] as brother from t_family where array_contains(map_keys(family_members),"brother");

hive复合数据类型map

原文：https://www.cnblogs.com/lucas-zhao/p/11901875.html