SQLTuning Mystery: Anatomy of a SQL Statement

Sir Arthur Conan Doyle's role model for Sherlock Holmes was his former Professor Dr. Joseph Bell. He wrote about his motivation, that he wanted to write a detective story "in which the hero would treat crime as Dr. Bell treated disease and where science would take the place of chance." As we all know, when watching series like CSI, Conan Doyle’s opinion is widely accepted nowadays. Can we learn from Sherlock Holmes’s way of deductions to improve our own daily work? Following a real case, we will see how step by step fact based deduction will lead to success. Please, join in, contribute and have fun.