Comments are also necessary to understand why the object was formed and what information it would store. While creating the database, table, and table columns, Apache Hive allows you to add comments. These comments can be left blank if you don’t want to. Example: As part of our Labs. We created an order table. Comment …
Section 7:61. Adding comments to columns and tables Read More »
To create a table in Hive and list all the tables in the current database, you can use the following commands: By default We will Create Managed table If you add the option IF NOT EXISTS, Hive ignores the statement in case the table already exists. AS part of Our Labs we created Orders table
To run Hive queries using Beeline, you can follow these steps: Open a terminal window and enter the command “beeline”. In Hive, the “-u” option is used to specify the JDBC URL for connecting to the Hive server. This option is used in conjunction with the Hive CLI or with other Hive tools such as …
Section 6:58. Running Hive Queries using Beeline Read More »
Beeline is a command-line interface (CLI) for interacting with Apache Hive, an open-source data warehouse system built on top of Hadoop. It is an alternative to the original Hive CLI, which has some limitations and can be difficult to use. Beeline provides a more modern and flexible interface for interacting with Hive. One of the …
Section 6:57. Overview of beeline – Alternative to Hive CLI Read More »
The Hive metastore is a central repository that stores metadata information about Hive tables, including the table schema, column names, column types, storage format, and location of the data. The Hive metastore plays a crucial role in enabling Hive to interact with data stored in various storage systems, such as HDFS, S3, and others. When …
In Hive, you can use the DESCRIBE command to retrieve metadata about a table. The DESCRIBE command provides information about the columns in the table, their data types, and other properties. You can use two different variants of the DESCRIBE command in Hive to get the metadata of a table, which are: DESCRIBE EXTENDED – …
Section 6:55. Retrieve Metadata of Hive Tables using Describe(Extended and Formatted) Read More »
