SQLAuthority News – Book Review – Joe Celkos SQL Puzzles and Answers, Second Edition, Second Edition

Joe Celko’s SQL Puzzles and Answers, Second Edition, Second Edition (The Morgan Kaufmann Series in Data Management Systems) (Paperback) by Joe Celko (Author) Link to Amazon Short Review: This book is for all of them who enjoy little puzzles or just something which gives them challenge. Some puzzles took hours…
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SQL SERVER – Union vs. Union All – Which is better for performance?

This article is completely re-written with better example SQL SERVER – Difference Between Union vs. Union All – Optimal Performance Comparison. I suggest all of my readers to go here for update article. UNION The UNION command is used to select related information from two tables, much like the JOIN…
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