hive表数据导出到本地 将hive表中数据导出

1、insert导出

1）将查询的结果导出到本地

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

2）将查询的结果格式化导出到本地

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

3）将查询的结果导出到HDFS上(没有local)

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

2、Hadoop命令导出到本地

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

3、hive shell 命令导出

基本语法：（hive -f/-e 执行语句或者脚本 > file）

[victor@node1 hive]$ bin/hive -e 'select * from default.student;' > 
/opt/module/datas/export/student4.txt;

4、export导出到HDFS上

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