在直线蜂巢中导出为 csv [英] Export as csv in beeline hive

问题描述

我正在尝试将我的配置单元表导出为直线配置单元中的 csv.当我运行命令 !sql select * from database1 >/user/bob/output.csv 它给了我语法错误.

I am trying to export my hive table as a csv in beeline hive. When I run the command !sql select * from database1 > /user/bob/output.csv it gives me syntax error.

此时我已使用以下命令成功连接到数据库.查询在控制台输出正确的结果.

I have successfully connected to the database at this point using the below command. The query outputs the correct results on console.

beeline -u 'jdbc:hive2://[databaseaddress]' --outputformat=csv

另外，不太清楚文件的最终位置.应该是hdfs中的文件路径正确吗?

Also, not very clear where the file ends up. It should be the file path in hdfs correct?

推荐答案

当 hive 版本至少为 0.11.0 时，您可以执行:

When hive version is at least 0.11.0 you can execute:

INSERT OVERWRITE LOCAL DIRECTORY '/tmp/directoryWhereToStoreData' 
ROW FORMAT DELIMITED 
FIELDS TERMINATED BY ','  
LINES TERMINATED BY "
"
SELECT * FROM yourTable;

从 hive/beeline 将表存储到本地文件系统上的目录.

from hive/beeline to store the table into a directory on the local filesystem.

或者，使用直线，将 SELECT 查询保存在 yourSQLFile.sql 中并运行:

Alternatively, with beeline, save your SELECT query in yourSQLFile.sql and run:

beeline -u 'jdbc:hive2://[databaseaddress]' --outputformat=csv2 -f yourSQlFile.sql > theFileWhereToStoreTheData.csv 

此外，这会将结果存储到本地文件系统中的文件中.

从 hive，将数据存储到 HDFS:

From hive, to store the data somewhere into HDFS:

CREATE EXTERNAL TABLE output 
LIKE yourTable 
ROW FORMAT DELIMITED 
FIELDS TERMINATED BY ','
LINES TERMINATED BY '
'
LOCATION 'hfds://WhereDoYou/Like';

INSERT OVERWRITE TABLE output SELECT * from yourTable;

然后您可以使用以下方法将数据收集到本地文件:

then you can collect the data to a local file using:

hdfs dfs -getmerge /WhereDoYou/Like

这是另一种仅使用直线获取数据的选项:

This is another option to get the data using beeline only:

env HADOOP_CLIENT_OPTS="-Ddisable.quoting.for.sv=false" beeline -u "jdbc:hive2://your.hive.server.address:10000/" --incremental=true --outputformat=csv2 -e "select * from youdatabase.yourtable" 

<小时>

工作:

Connected to: Apache Hive (version 1.1.0-cdh5.10.1)
Driver: Hive JDBC (version 1.1.0-cdh5.10.1)
Transaction isolation: TRANSACTION_REPEATABLE_READ
Beeline version 1.1.0-cdh5.10.1 by Apache Hive

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