hive实验_hive的实验一什么做

hadoop fs -ls /user/hive/warehouse


show databases;
use mydb;
show tables;
create table test1(id int,name string)partitioned by (dt string);


https://cwiki.apache.org/confluence/display/Hive/Tutorial


create table page_views
(
track_time string,
url string,
session_id string,
referer string,
ip string,
end_user_id string,
city_id string
) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t';


hive -e "load data local inpath '/home/hadoop/page_views.dat'  OVERWRITE INTO TABLE  page_views;"


内部表（托管表）
Drop  
外边表（external ）
默认分隔符：列 为 \001         行为 \n
分区表
Insert  overwrite  table  page…




CREATE TABLE page_view(viewTime INT, userid BIGINT,
                page_url STRING, referrer_url STRING,
                ip STRING COMMENT 'IP Address of the User')
COMMENT 'This is the page view table'
PARTITIONED BY(dt STRING, country STRING)
ROW FORMAT DELIMITED
        FIELDS TERMINATED BY '1'
STORED AS SEQUENCEFILE;


select * 不会解析为mapreduce,是直接找hdfs文件