CQL DDL: DESCRIBE, DROP, and TRUNCATE TABLE statements
Explore the core CQL Data Definition Language commands for managing tables in Apache Cassandra. Learn how to describe table schemas, drop tables with care using conditional statements, and truncate tables to remove all data instantly. Gain practical experience with basic commands like DESCRIBE, DROP, and TRUNCATE on a sample courses table to understand their usage and impact.
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In this lesson, we will explore the basic syntax of CQL Data Definition Language (DDL) statements to DESCRIBE, DROP, and TRUNCATE a table in Apache Cassandra. Using a simple example, we will create a courses table and perform basic queries on it. This introductory table will feature native data types and a single-column primary key, with more complex structures introduced later as the course progresses.
The DESCRIBE TABLE command
The DESCRIBE TABLE command displays the CQL table schema, which can be utilized to recreate the table.