hive导入/导出实操案例

hive (default)> import table student2 partition(month='201709')
from '/user/hive/warehouse/export/student';

hive (default)> insert overwrite local directory
'/opt/module/datas/export/student'  select * from student;

hive(default)>insert overwrite local directory
'/opt/module/datas/export/student1'
 ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t'
select * from student;

hive (default)> insert overwrite directory
'/user/hadoop/student2'
 ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t'
 select * from student;

hive (default)> dfs -get
/user/hive/warehouse/student/month=201709/000000_0
/opt/module/datas/export/student3.txt;

[hadoop@hadoop102 hive]$ bin/hive -e 'select * from
default.student;' >/opt/module/datas/export/student4.txt;

(defahiveult)> export table default.student to
'/user/hive/warehouse/export/student';

hive (default)> truncate table student;