T-SQL Fundamental - Well worth the purchase,
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This review is from: Microsoft SQL Server 2008 T-SQL Fundamentals (PRO-Developer) (Paperback)
Indepth concise, slightly more than an introduction to T-SQL, I found this to be great value for money. The author has gone into a good deal of detail and so far (half way through the book) I haven't been left looking up anything external to the book. Code snippets are also quite good too. I would recommend.