Dive into the world of DB2 query optimization with our comprehensive guide! In this video, we explore the crucial aspects of understanding when to create an index, pinpointing scenarios where an index may not be applied, and unveiling strategies to circumvent full table scans, all of which are pivotal for enhancing query performance in DB2 databases. Discover advanced techniques, including the art of crafting indexes with included columns, enabling reverse scans, and harnessing the power of clustered indexes, all designed to contribute to the efficiency and speed of your database queries. Gain insights from expert recommendations on indexing strategies, obtainable through tools like db2advise, that empower you to make informed decisions for optimal performance. We'll also unravel the significance of considerations for multidimensional aggregate tables, shedding light on their role in comprehensive database optimization. Learn the ropes of ongoing index maintenance, utilizing tools