Hive查询输出到文件

Question

我用java代码运行hive查询.例:

"SELECT*FROM table WHERE id> 100"

如何将结果导出到hdfs文件.

Answer 1

以下查询将结果直接插入HDFS:

INSERT OVERWRITE DIRECTORY '/path/to/output/dir' SELECT * FROM table WHERE id > 100;

Answer 2

此命令将输出重定向到您选择的文本文件:

$hive -e "select * from table where id > 10" > ~/sample_output.txt

Answer 3

这会将结果放在目录下的制表符分隔文件中:

INSERT OVERWRITE LOCAL DIRECTORY '/home/hadoop/YourTableDir'
ROW FORMAT DELIMITED
FIELDS TERMINATED BY '\t'
STORED AS TEXTFILE
SELECT * FROM table WHERE id > 100;