Hive import and export mode

• What 4 ways Hive in additional import data is? Please write a brief grammar

1. Import From Local: load data local inpath '/home/1.txt' (overwrite) into table student;
2. 从Hdfs导入： load data inpath ‘/user/hive/warehouse/1.txt’ (overwrite)into table student;
3. Import query: create table student1 as select * from student; (a particular query data may be specific)
4. Query results into: insert (overwrite) into table staff select * from track_log;

• Hive export data in several ways? How to export data

1. With insert overwrite mode Export
   Export to local:

insert overwrite local directory ‘/home/robot/1/2’ row format delimited fields terminated by ‘\t’ select * from staff;(递归创建目录)

Export to HDFS

insert overwrite directory ‘/user/hive/1/2’ row format delimited fields terminated by ‘\t’ select * from staff;

3. Bash shell covering additional export

$ bin/hive -e “select * from staff;” > /home/z/backup.log

4. Sqoop to export data to an external hive