Query Rewriting
Query rewriting is a technique in database and search systems where an original query is transformed into an alternative form before execution to improve performance, accuracy, or security. It involves modifying SQL, NoSQL, or search queries to optimize execution plans, handle complex logic, or enforce access controls. This process is commonly used in query optimization, semantic caching, and data security applications.
Developers should learn query rewriting when working with databases, search engines, or APIs to enhance system efficiency and reliability. It is crucial for optimizing slow queries, implementing row-level security in multi-tenant applications, and improving search relevance in information retrieval systems. Use cases include rewriting SQL queries for better index usage, transforming user search terms for semantic matching, and sanitizing inputs to prevent SQL injection attacks.