Description: The ‘EXPLAIN EXTENDED’ command is a powerful tool in SQL that allows developers and database administrators to obtain detailed information about the execution plan of a query. This command not only provides the basic execution plan but also includes additional information that can be crucial for optimizing query performance. When executing ‘EXPLAIN EXTENDED’, an analysis is generated that shows how the database engine plans to access the data, which indexes will be used, and how joins and filters will be performed. This information is essential for identifying performance bottlenecks and making adjustments to queries or the database structure. Additionally, ‘EXPLAIN EXTENDED’ can reveal details about optimizations that the database engine may apply, allowing developers to better understand the behavior of their queries and improve the overall efficiency of database operations.
