hvie 进阶笔记

-- mysql方式
create table account_channel(account_ String,channel_ String)  as select 
a.account,b.channel from register a join `install` b on a.device = b.device

-- hive方式
create table account_channel ROW FORMAT DELIMITED FIELDS TERMINATED BY ‘^‘ STORED AS TEXTFILE  select  distinct a.account,b.channel from register a join install b on a.device = b.device;

以覆盖的方式添加数据
INSERT OVERWRITE account_channel2  IF NOT EXISTS select  distinct a.account,b.channel from register a join install b on a.device = b.device;