Hadoop. Hive. Hive -e example. Hive -f command example. Usage: hive [-hiveconf x=y]* [<-i filename>]* [<-f filename>|<-e query-string>] [-S] -i Initialization Sql from file (executed automatically and silently before any other commands) -e 'quoted query string' Sql from command line -f Sql from file -S Silent mode in interactive shell where only data is emitted -hiveconf x=y Use this to set hive/hadoop configuration variables. Next Post How to check if directory exists or not using shell script. Read: Cloudera Impala Generate Sequence Numbers without UDF Netezza ROWNUM Pseudo Column Alternative Run Impala SQL Script File Passing argument and Working Example An Introduction to […] hive -f This is the equivalent of the source command that can be run in the hive cli to run scripts. To run Hive commands interactively. The values of the variables in Hive ... Below examples set’s emp to table variable in hiveconf namespace. It used as such: hive -f . If you are already familiar with the SQL then Hive command syntax are easy to understand. Tweet. Welcome to StackOverflow: if you post code, XML or data samples, please highlight those lines in the text editor and click on the "code samples" button ( { } ) on the editor toolbar or using Ctrl+K on your keyboard to nicely format and syntax highlight it! Related Articles : Hive -f Command to run the queries from a file. Post navigation. Top Hive Commands, This blog discusses Hive Commands with examples in HQL. Pin. Hive CLI (Command Line Interface) , which is nothing but Hive Shell is the default service in Hive and it is the most common way of interacting with Hive. For more information, see Connect to the Master Node Using SSH in the Amazon EMR Management Guide.. At the command prompt for the current master node, type hive.. You should see a hive prompt: hive> Enter a Hive command that maps a table in the Hive application to the data in DynamoDB. Apache Hive commands for beginners and professionals with examples. Till the time, we have discussed on Hive basics and why it is so popular among organizations. CREATE, DROP, TRUNCATE, ALTER, SHOW, DESCRIBE, USE, LOAD, INSERT, In this blog post, let’s discuss top Hive commands with examples. 0 Shares. Share. After that, I can just export the table in the same way. At the command line, I can now type: hive -f hive_word_count.hql and it will run all of the code I ran interactively before. In this article, we will discuss on the commonly used Hadoop Hive commands. Run non-interactive script hive ‐f script.sql Hive Shell Function Hive Run script inside shell source file_name Run ls (dfs) commands dfs –ls /user Run ls (bash command) from shell !ls Set configuration variables set mapred.reduce.tasks=32 TAB auto completion set hive. Show all … These Hive commands are very important to set up the foundation for Hive Certification Training. Previous Post Get the create table statement for an existing Hive table using Show create table. there are 2 types of hive commands: hive ddl commands, hive dml commands. Hive CLI Commands. Hive variables are key-value pairs that can be set using the set command and they can be used in scripts and Hive SQL. We can run both batch and Interactive shell commands via CLI service which we will cover in the following sections. Now, we will focus on Hive commands on HQL with examples. Connect to the master node. Share +1. Hive Commands in HQL with Examples. For that, I want to wrap these commands into a script so they can be quickly run any time I want (such as to account for daily changes in the raw data). It used as such: hive -f . These are frequently used commands that are necessary to know for every Hive programmer wither he is beginner or experiences.
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