2. Use OVERWRITE clause. In this section, I will explain exporting a Hive table into CSV using beeline CLI directly. a job is raised and we get the output - 9791. the OVERWRITE option means that existing data in the table is deleted. Ignore Header Line from the Upload File. If you are using an older version of the hive and using the hive command then jump to exporting table using the Hive command. This exports the result of the select query in CSV format into export.csv file at the current local directory. If you are using an older version of Hive, below are the different examples to export a table into a CSV file. See that the load was successful and there were 3 files used in the load. If you have a huge table, this exports the data into multiple part files, You can combine them into a single file using Unix cat command as shown below. Syntax: LOAD DATA [LOCAL] INPATH '' [OVERWRITE] INTO TABLE ; Note: This is a clean approach and doesn’t have to use sed to replace tab or special char with comma. Follow the below steps to LOAD data into this table. LOAD DATA statement loads the data into a Hive serde table from the user specified directory or file. Using below query we are going to load data into table as follow: load data local inpath '/home/bigdata/Downloads/list_authors.txt' into table authors; To verify the data : select * from authors limit 3; Create another table, load and verify the data CREATE TABLE books( id int, book_title string ) ROW FORMAT DELIMITED fields terminated by ',' TBLPROPERTIES ("skip.header.line.count"="1"); If a directory is specified then all the files from the directory are loaded. If you continue to use this site we will assume that you are happy with it. so existing data in the table will be lost Make sure the table is … If you have noticed, when we say “LOAD DATA INPATH …“ input file is NOT copied and instead it is moved to the location mentioned in the “CREATE TABLE … LOCATION“. If you wanted to export the Hive table into a CSV file (with comma delimiter fields), use the option ROW FORMAT DELIMITED FIELDS TERMINATED BY and specify the field delimiter you want. LOAD DATA INPATH 'hdfs_file_or_directory_path' [OVERWRITE] INTO TABLE tablename [PARTITION (partcol1=val1, partcol2=val2...)] When the LOAD DATA statement operates on a partitioned table, it always operates on one partition at a time. As you can see, the ratings table has 4 columns (userId, movieId, rating, timestamp) and the movies table has 3 columns (movieId, title, genres). To query the data using below query in hive shell At dataunbox, we have dedicated this blog to all students and working professionals who are aspiring to be a data engineer or data scientist. First type of data contains header i.e. Let’s insert some more data in Employee_Bkp table … LOAD DATA [LOCAL] INPATH 'path_of_the_data_source' INTO TABLE my_data_space [FORMAT 'separator' / … Hive provides an INSERT OVERWRITE DIRECTORY statement to export a Hive table into a file, by default the exported data has a ^A (invisible character) as a field separator. 1. You can also specify a property set hive.cli.print.header=true before the SELECT to export CSV file with field/column names on the header. The emp.employee table is loaded with below data. If the data file does not have a header line, this configuration can be omitted in the query. The best thing about Hive partitioning is that Hive will take care of the partition creation and administration. This concatenates all files and put it back into HDFS at specified location. There are a few CSV files extracted from the Mondrian database with the same names as the table names in the database. LOAD DATA [LOCAL] INPATH 'filepath' [OVERWRITE] INTO TABLE tablename [PARTITION (partcol1 = val1, partcol2 = val2...)] Let us go over the main commands we need to know to be able to load data into a Hive table using the LOAD command. Here is the Hive query that loads data into a Hive table. Hadoop Hive: How to skip the first line of csv while loading in hive , Now to load data in table from file, I am using following command - load data local inpath '/home/cluster/TestHive.csv' into table db.test; terminated BY '\t' lines terminated BY '\n' tblproperties("skip.header.line.count"="1");. Based on your table size, this command may export data into multiple files. The following example loads all columns of the persondata table: LOAD … First, start HiveServer2 and connect using the beeline as shown below. Use optional LOCAL clause to export a CSV file from Hive table into local directory. In the following input text file, the first line is the header … But in Hive, we can insert data using the LOAD DATA statement. Related: Start HiveServer2 and use Beeline commands. In this article, I will explain how to export the Hive table into a CSV file on HDFS, Local directory from Hive CLI and Beeline, using HiveQL script, and finally exporting data with column names on the header. --------------------------------------------------------------------------------, 'hdfs://sandbox.hortonworks.com:8020/apps/hive/warehouse/testdb.db/numbers/file.csv', --r-- 1 root root 47844 2016-08-22 06:46 file1.csv, --r-- 1 root root 47844 2016-08-22 06:46 file2.csv, --r-- 1 root root 47844 2016-08-22 06:06 file.csv. The INDEXIMA command LOAD DATA INPATH is similar to the HSQL command compatible with Hadoop Hive 2 standard.. Hive – What is Metastore and Data Warehouse Location? Otherwise, the header line is loaded as a record to the table. LOAD DATA Description. Start HiveServer2 and use Beeline commands, What are the Different Types of Tables present in Apache Hive, How to Drop Table & Database Explained with Examples, What is a Temporary Table and its Usage with Examples, Difference Between Managed vs External Tables. Note you can also load the data from LOCAL without uploading to HDFS. LOAD DATA LOCAL INPATH '/home/hive/data.csv' INTO TABLE emp.employee; Unlike loading from HDFS, source file from LOCAL file system won’t be removed. LOAD DATA INPATH '