SQL Server and Azure SQL Database Intelligent Query Performance
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Overview
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This session examines intelligent query processing enhancements in SQL Server 2019 and Azure SQL Database. It discusses memory grant feedback, batch mode, adaptive joins, compatibility levels, and query performance regressions.
Syllabus
Introduction
Anxietyfree upgrades
Memory Grant Feedback
Query Execution Plan
Questions
Batch Mode
Batch Mode Demo
Regressions
BIWIN
MSSTDFs
MSSTDFs Demo
Adaptive Threshold
Initial Overhead
Compatibility Levels
Adaptive Joins
Does it have overhead
Adaptive Join
Adaptive Join with Hash Match
Reporting Threshold
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