hive 建庫建表插入資料

hive 建庫建表插入資料

先上傳檔案

sftp> put /users/chenxin/downloads/hql50/hql50/score.txt /root/data/hql50

sftp> put /users/chenxin/downloads/hql50/hql50/teacher.txt /root/data/hql50 
sftp> put /users/chenxin/downloads/hql50/hql50/course.txt /root/data/hql50
sftp> put /users/chenxin/downloads/hql50/hql50/student.txt /root/data/hql50

hdfs dfs -mkdir /homework

hdfs dfs -put course.txt /homework
hdfs dfs -put score.txt /homework
hdfs dfs -put student.txt /homework
hdfs dfs -put teacher.txt /homework

hive 建庫用庫

create database homework;

use homewrok;

create table if not exists course(

course_id int,course_name string,teacher_id int
) comment 'course table' 
row format delimited 
fields terminated by '\t' 
lines terminated by '\n' 
stored as textfile;

create table if not exists score(

student_id int,course_id int,score int
) comment 'score table' 
row format delimited 
fields terminated by '\t' 
lines terminated by '\n' 
stored as textfile;

create table if not exists student(

student_id int,student_name string,
student_birth string,student_*** string
) comment 'student table' 
row format delimited 
fields terminated by '\t' 
lines terminated by '\n' 
stored as textfile;

create table if not exists teacher(

teacher_id int,
display all 478 possibilities? (y or n)
ame string
) comment 'teacher table' 
row format delimited 
fields terminated by '\t' 
lines terminated by '\n' 
stored as textfile;

show tables;

load data inpath'/homework/course.txt' into table course;

load data inpath'/homework/score.txt' into table score;
load data inpath'/homework/student.txt' into table student;
load data inpath'/homework/teacher.txt' into table teacher;

select * from teacher;

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