Beyond Basic Indexes: Mastering Partial, Composite, and Covering Indexes in SQL

Most developers know that adding an index speeds up queries. But slapping a basic index on every column you filter by is a recipe for bloated storage, slower writes, and no real performance gain. The real power comes from choosing the right type of index for the job . In this article, we'll go beyond the basics and explore three advanced indexing strategies: partial indexes , composite indexes , and covering indexes . Each solves a different class of performance problem, and knowing when to reac