Joe Sack is a Principal Consultant with SQLskills. He has worked as a SQL Server professional since 1997 and has supported and developed for SQL Server environments in financial services, IT consulting, manufacturing, retail and
the real estate industry. Click here for a full bio.
Joe Sack (@josephsack) of SQLskills.com shows us that we might not always be able to make an accurate correlation between wait statistics and observer overhead, depending on the method being used to observe a system.
SQLskills' Joe Sack (@josephsack) walks us through an interesting scenario where we might blame a query performance issue on parameter sniffing or bad statistics, when it actually turns out that a check constraint is the best solution to keep the optimizer honest.