Itzik Ben-gan T-sql | Fundamentals

If you've never written a SELECT statement, start elsewhere (e.g., Head First SQL or Microsoft’s free tutorials). Itzik assumes you understand basic database concepts like tables, rows, columns, and primary keys. A true beginner will hit Chapter 2 (Predicates and Operators) and feel lost.

When you master , you gain the ability to review and debug machine-generated code. You learn to spot the difference between a logically correct query and a physically efficient one. itzik ben-gan t-sql fundamentals

Itzik argues that most performance problems arise because developers write queries based on physical intuition (thinking about hard drives and loops) rather than logical processing (thinking about sets). If you've never written a SELECT statement, start