Lateral View往往與explode或是split函數結果使用

樣例表：

Jack,male,eat-play,北京:海淀-上海:浦東
Miso,male,eat-net-play,河北:保定-北京:海淀
小明,male,eat-net,河北:張家口-上海:浦東
小紅,male,net-play,河北:保定-北京:海淀
Lily,female,eat-net,河北:保定-北京:海淀
Lucy,female,play-eat,北京:海淀-上海:浦東
Jack,male,eat-net-play,河北:保定-北京:海淀
Miso,male,online-net-eat,河北:保定-北京:海淀
?? ?
create table tb_address(
? name string,
? sex string,
? likes array<string>,
? address map<string,string>
)
row format delimited fields terminated by ','
collection items terminated by '-'
map keys terminated by ':'
lines terminated by '\n';

load data local inpath '/home/user_address.txt' into table tb_address;

create table tb_count(likecount int,citycount int,areacount int) row format delimited fields terminated by ',';

from tb_address
??? insert into tb_count
select count(distinct(t1.like1)) as lc,count(distinct(t2.kcity)) as ca
lateral view explode(likes) t1 as like1
lateral view explode(address) t2 as kcity,karea;

總結

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