Preface
Most relational tuning experts agree that the majority of performance problems among applications that access a relational database are caused by poorly coded programs or improperly coded SQL. Industry experts also note that poor performing SQL is responsible for as much as 80 percent of response-time issues. I personally agree with this. Of all the IT shops for which I have provided performance and tuning consulting work in, most of the performance issues are directly related to modifying application and SQL code, or adding and altering indexes. That is why I continually try to educate developers in the ways of SQL programming and associated performance issues. I also believe more developers should be educated in how to read and analyze ...
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