We’ll talk through the WHERE, FROM, SELECT, JOIN, GROUP BY, and ORDER BY components to understand how they affect parameter sniffing. Then, we’ll layer on more complexity to our parameter sniffing problem by first adding an index (which backfires catastrophically), and then adding more parameters (making SQL Server’s choices even tougher.) Demo Script Transact-SQL /*…
03. Mo Choices, Mo Problems
We’ll talk through the WHERE, FROM, SELECT, JOIN, GROUP BY, and ORDER BY components to understand how they affect parameter sniffing. Then, we’ll layer on more complexity to our parameter sniffing problem by first adding an index (which backfires catastrophically), and then adding more parameters (making SQL Server’s choices even tougher.) Demo Script Transact-SQL /*…
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- 0.1 Prerequisites Before the Class
- 01. What Parameter Sniffing Is
- 02. The Kinds of Queries That Are Susceptible to Parameter Sniffing
- 04. Lab: Write a Query that’s Susceptible to Parameter Sniffing
- 05. What Triggers Parameter Sniffing Emergencies, Part 1
- 06. What Triggers Parameter Sniffing Emergencies, Part 2
- 07. How to React to Parameter Sniffing Emergencies
- 08. Lab: Tackle a Parameter Sniffing Emergency
- 09. What Parameter Sniffing ISN’T
- 10. How SQL Server 2022 Tries Fixing Parameter Sniffing
- 11. Class Recap
- Bonus: Storytelling Time