It's time for SQL Server Spring Training! I'm teaching 60-90 minutes of my most popular classes for free over the next few months. Tomorrow I'm doing Fundamentals of Query Tuning. It's for folks who are comfortable writing queries to get the data they want, but wildly uncomfortable reading query plans and trying to explain why queries aren't going faster. If you look at a query plan and think that the percentages shown mean anything, then it's time for you to get the fundamentals under your belt.