A Little About FORCESEEK Hints In SQL Server скачать в хорошем качестве

A Little About FORCESEEK Hints In SQL Server

In this video, I delve into the world of tuning queries that use OR clauses in joins, specifically focusing on a query that can be notoriously slow due to suboptimal execution plans. I explore why SQL Server often chooses the most inefficient plan and demonstrate how adding hints like 'FORCESEEK' can significantly improve performance. By walking through a detailed example involving large tables, I highlight the importance of understanding query costs and estimated subtree costs versus actual execution time. This video is part of my ongoing effort to help you navigate the complexities of SQL Server tuning and make informed decisions about indexing and query optimization. CHAPTERS 00:00:00 - Introduction 00:02:34 - Query Execution Time and Cost Analysis 00:06:17 - Or Clauses and Index Utilization 00:08:59 - Nested Loops vs. Seek Hints 00:11:25 - Query Plan Costs vs. Actual Performance 00:13:44 - Adaptive Join Plans and Batch Mode 00:14:46 - Conclusion and Next Steps ━━━━━━━━━━━━━━━━━━━━━━━━━━ 📚 TRAINING & COURSES ━━━━━━━━━━━━━━━━━━━━━━━━━━ Get AI-Ready With Erik https://training.erikdarling.com/get-... SQL Server Performance Engineering Course https://training.erikdarling.com/sql-... Learn T-SQL with Erik https://training.erikdarling.com/lear... Everything Bundle: https://training.erikdarling.com/?cou... ━━━━━━━━━━━━━━━━━━━━━━━━━━ 🛠️ CONSULTING & SERVICES ━━━━━━━━━━━━━━━━━━━━━━━━━━ Need SQL Server performance help? https://training.erikdarling.com/sqlc... ━━━━━━━━━━━━━━━━━━━━━━━━━━ 💬 CONNECT ━━━━━━━━━━━━━━━━━━━━━━━━━━ Ask questions at Office Hours https://erikdarling.com/officehours/ Become a channel member    / @erikdarlingdata   ━━━━━━━━━━━━━━━━━━━━━━━━━━