1:37:51

6 Query Tuning Techniques - Solve 75% SQL Server Performance Problems (by Amit Bansal)

1:14:20

SESSION: Building Your T-SQL Tool Kit: Window Function Fundamentals

1:39:24

SQL Query Optimization. Why is it so hard to get right?

53:38

System Design Concepts Course and Interview Prep

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SESSION: Troubleshooting Clusters (Allan Hirt)