How to use EXPLAIN to fix slow queries in MySQL

MySQL's EXPLAIN command helps optimize database queries by revealing execution details and performance bottlenecks. It identifies issues like full table scans, unused indexes, and inefficient joins. EXPLAIN works with SELECT, INSERT, UPDATE, and DELETE statements, offering table and JSON output formats. Key aspects to examine include query structure, data access methods, index usage, row scanning, and extra operations. Tools like MySQL Workbench and Percona Toolkit can enhance query analysis and optimization.