New Features in SQL Server 2022

 

🔹 1. Intelligent Query Processing (IQP) Enhancements

• Parameter Sensitive Plan (PSP) optimization: Fixes the "parameter sniffing" problem by generating multiple plans.

• Memory grant feedback (persistent): Adapts memory allocation more accurately.

• Degree of parallelism feedback: SQL Server adjusts the number of CPU cores used for queries dynamically.

🔹 2. Ledger (Blockchain-like Auditing)

• Ensures tamper-proof, cryptographically verifiable data.

• Great for financial, auditing, or compliance use cases.

🔹 3. Azure Integration

• Managed Instance Link: Seamlessly replicate data to Azure SQL Managed Instance for hybrid HA/DR.

• Azure Synapse Link: For near real-time analytics on operational data.

• SQL Server 2022 is "Azure-enabled".

🔹 4. TempDB Improvements

• Parallel inserts into a single TempDB page.

• Metadata contention reduction.

🔹 5. Security Enhancements

• SQL Ledger.

• Enhanced Always Encrypted with secure enclaves.

• More robust authentication for linked servers.

🔹 6. Contained Availability Groups

• Easier to move entire databases with user logins, jobs, and metadata between environments.