ばいちょ(売価調査)、価格比較とネットでのお買い物を楽に

内容説明 Tackle the toughest set-based querying and query tuning problems guided by an author team with in-depth， inside knowledge of T-SQL. Deepen your understanding of architecture and internals and gain practical approaches and advanced techniques to optimize your code s performance. Discover how to: Move from procedural programming to the language of sets and logic Optimize query tuning with a top-down methodology Assess algorithmic complexity to predict performance Compare data-aggregation techniques， including new grouping sets Manage data modification insert， delete， update， merge for performance Write more efficient queries against partitioned tables Work with graphs， trees， hierarchies， and recursive queries Plus Use pure-logic puzzles to sharpen your problem-solving skills