In this module, you’ll learn how SQL Server automatically balances work across multiple threads, how that mechanism fails, and what to look for in parallel plans when you’re troubleshooting slow performance. Demo Script Transact-SQL /* Mastering Query Tuning – How Parallelism Works This script is from our Mastering Query Tuning class. To learn more: https://www.brentozar.com/go/masterqueries…
3.1 How Parallelism Balances Work Across Threads
In this module, you’ll learn how SQL Server automatically balances work across multiple threads, how that mechanism fails, and what to look for in parallel plans when you’re troubleshooting slow performance. Demo Script Transact-SQL /* Mastering Query Tuning – How Parallelism Works This script is from our Mastering Query Tuning class. To learn more: https://www.brentozar.com/go/masterqueries…
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- 0.1 Prerequisites Before the Class (59 min)
- 0.2 Download the Slides and Scripts
- 1.1 How SQL Server Builds Query Plans
- 1.2 When the Architect Gets an Early Estimate Wrong
- 1.3 When the Architect Gets a Late Estimate Wrong
- 1.4 Lab 1 Setup: Improving Estimates
- 1.5 The Tuning Robots in SQL Server 2017, 2019, and 2022
- 1.6 Lab 2 Setup: Analyzing a Running Workload
- 2.1 Tuning for SELECT * and Lots of Rows
- 2.2 User-Defined Functions
- 2.3 Lab 3 Setup: Changing Results and Parameters
- 2.4 Dynamic SQL Pro Tips
- 2.5 Lab 4 Setup: Advanced Rewrites
- 3.2 Avoiding Deadlocks
- 3.3 Using Batches to Do a Lot of Work Without Blocking
- 4.1 Lab 5 Setup: The Final Lab
- 4.2 Final Lab: Index Tuning
- 4.3a Final Lab: usp_Q1080
- 4.3a Final Lab: usp_Q6627
- 4.3a Final Lab: usp_Q8116
- 4.3a Final Lab: usp_Report3
- 4.3b Final Lab: Logging sp_BlitzCache to a Table
- 4.3c Final Lab: usp_Q7521
- 4.3e Final Lab: usp_FindRelatedPosts
- 4.3f Final Lab: usp_Q6627, Take 2
- Bonus: Storytelling Time