Description

SQL Server 2017 Standard License key – Perpetual License

SQL Server 2017 marked a significant step forward in query performance optimization with the introduction of Query Store and several other advancements:

• Query Store: This revolutionary feature provides a central repository for query execution history, capturing execution plans and performance metrics. It allows you to:
  • Analyze Query History: Review past query executions, plans, and performance data to identify trends and potential issues.
  • Monitor Performance: Gain insights into query execution times, wait statistics, and resource usage to pinpoint bottlenecks.
  • Detect Regressions: Be alerted to changes in query performance over time, enabling proactive troubleshooting.
  • Optimize Plans: Force a specific, known-to-perform well execution plan for consistent performance. (Automatic plan correction came later)

• Adaptive Joins: Introduced in 2017, adaptive joins dynamically choose the most efficient join type (nested loop, merge join, etc.) based on actual data cardinality at runtime. This can significantly improve performance for queries with unpredictable data distribution.
• Improved Cardinality Estimation: Enhanced algorithms for estimating data cardinality lead to more accurate query plan creation, reducing inefficient execution plans.

These advancements in SQL Server 2017 empowered database administrators and developers to gain deeper insights into query performance and implement targeted optimizations.