Creating and Using Indexes

In the last lesson, we learned about B-Tree indexes, the most common type in PostgreSQL. Now, let's get practical! This lesson will guide you through creating, using, and managing indexes to boost your query performance.

You'll learn the syntax, see practical examples, and understand when and how to apply indexes effectively.

The basic syntax for creating an index is straightforward. You specify the table, the column(s) to index, and optionally the index type (though B-Tree is default and most common).

• CREATE INDEX: The command to create a new index.
• index_name: A unique name you choose for your index.
• table_name: The table on which the index is built.
• column_name(s): The column(s) to include in the index.