Raymond Raymond / Hadoop, Hive & HBase

Create Temporary Table - Hive SQL

event 2020-08-25 visibility 2,921 comment 0 insights toc
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This page shows how to create a temporary Hive table via Hive SQL (HQL).

Create temporary table

Example:

CREATE TEMPORARY TABLE temp_customer
(`cust_id` int, `name` string,`created_date` date)
STORED AS PARQUET;

Temporary Hive tables are only visible to the creation session and will be deleted automatically when the session ends. The underlying data is stored in user scratch folder (/tmp/hive/$USERID/*).

Install Hive database

Follow the article below to install Hive on Windows 10 via WSL if you don't have available available Hive database to practice Hive SQL:

Examples on this page are based on Hive 3.* syntax.

Run query

All these SQL statements can be run using beeline CLI:

$HIVE_HOME/bin/beeline --silent=true

The above command line connects to the default HiveServer2 service via beeline. Once beeline is loaded, type the following command to connect:

0: jdbc:hive2://localhost:10000> !connect jdbc:hive2://localhost:10000
Enter username for jdbc:hive2://localhost:10000: hive
Enter password for jdbc:hive2://localhost:10000:
1: jdbc:hive2://localhost:10000>

The terminal looks like the following screenshot:

20200824111616-image.png

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