In the transition from SQL Server 2019 (v15.x) to SQL Server 2022 (v16.x), several significant enhancements and new features were introduced, reflecting Microsoft’s commitment to evolving its database technology to meet modern demands. Here’s a comparison of key advancements made in SQL Server 2022:
Performance and Scalability Enhancements
SQL Server 2022 introduced improvements in thread management with features like ParallelRedoThreadPool and ParallelRedoBatchRedo, which enhance the efficiency of parallel redo operations.
The reduction in buffer pool I/O promotions and enhanced spinlock algorithms contribute to more efficient data processing and internal management.
Query Store and Intelligent Query Processing
SQL Server 2022 expanded the capabilities of Query Store, adding features like Query Store on secondary replicas and Query Store hints.
New developments in memory grant feedback, such as Percentile and Persistence mode, and Parameter Sensitive Plan Optimization, were introduced to optimize query performance.
Management and Security Features
Integrated setup experience for Azure extension and improved management of Azure extension for SQL Server.
Enhancements in security features, including support for PFX certificates and other cryptographic enhancements, and the introduction of SQL Ledger, which provides an additional layer of data integrity.
Azure-Enabled Features and Integration
SQL Server 2022 strengthened its Azure integration with features like Link to Azure SQL Managed Instance (in various modes) and backup and restore to S3-compatible object storage.
Platform Support and Programmability
The removal of SQL Server Native Client (SNAC) in favor of newer drivers, hybrid buffer pool with direct write capabilities, and enhancements in container and Kubernetes support.
Innovations in BI and Analytics, including enhanced support for tabular BI semantic models and Master Data Services.
Miscellaneous Improvements
Various other improvements include optimized VM images in the Azure gallery, improved snapshot backup support, and XML compression for better capacity management.
It’s evident that SQL Server 2022 has focused on enhancing performance, scalability, and cloud integration, along with significant strides in intelligent query processing and security. These improvements demonstrate a commitment to providing a robust, efficient, and secure database platform suitable for modern, cloud-centric environments.
For a detailed overview of the new features and improvements in SQL Server 2022, you can refer to the SQL Server 2022 Release Notes. For a comprehensive comparison, including a full list of supported features in different editions, you can visit the SQL Server 2022 Comparison page on Microsoft’s website.