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商品描述
Structured Query Language, or Sql, can be daunting to learn. There are many books available that purport to ramp the user up from mere mortal to godlike status. This book is not one of them. Having written and taught Sql lessons to many groups ranging from support to developers, it eventually dawned on me that all too often I was presuming a "base" knowledge of Sql and databases and I was losing the room from the first slide. I needed to back up and explain more about why users would want to combine tables and why data was not just put in one single table. From there we could move on to how to combine tables to get answers. It was good to see lights come on in people's eyes. This book is a distillation of those lessons.
商品描述(中文翻譯)
結構化查詢語言(Structured Query Language,簡稱 SQL)可能讓人感到學習上有些困難。市面上有許多書籍聲稱能將使用者從普通人提升到神一般的地位,但這本書並不是其中之一。經過多次為不同群體(從支援人員到開發者)撰寫和教授 SQL 課程後,我逐漸意識到,我常常假設讀者對 SQL 和資料庫有一定的「基礎」知識,結果從第一張投影片開始就失去了聽眾。我需要退一步,解釋為什麼使用者會想要合併資料表,以及為什麼資料不僅僅放在一個單一的資料表中。從那裡,我們可以進一步探討如何合併資料表以獲得答案。看到人們眼中閃現的理解光芒,讓我感到非常欣慰。這本書就是這些課程的精華提煉。