How do I output the results of a HiveQL query to CSV?

Question

we would like to put the results of a Hive query to a CSV file. I thought the command should look like this:

insert overwrite directory \'/home/output.csv\'          


        

Answer 1

Just to cover more following steps after kicking off the query: INSERT OVERWRITE LOCAL DIRECTORY '/home/lvermeer/temp' ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' select books from table;

In my case, the generated data under temp folder is in deflate format, and it looks like this:

$ ls
000000_0.deflate  
000001_0.deflate  
000002_0.deflate  
000003_0.deflate  
000004_0.deflate  
000005_0.deflate  
000006_0.deflate  
000007_0.deflate

Here's the command to unzip the deflate files and put everything into one csv file:

hadoop fs -text "file:///home/lvermeer/temp/*" > /home/lvermeer/result.csv