Explore SQL Server 2025: 5 Best Usage

Microsoft SQL Server 2025 is the most recent version of SQL Server, which provides its-grade relational database management systems (RDBMSs). It offers enhanced Linux support, AI-powered query improvements, and integrated cloud optimization; SQL Server 2025 raises the bar for dependability, scalability, and performance in contemporary data environments.

πŸ” Introduction

MS SQL Server 2025 is designed and developed for hybrid database environments. It provides converge of on-premises, cloud, and edge computing environment. It integrates more seamlessly with Azure services, includes built-in performance analytics, and offers enhanced compatibility with open-source technologies.

SQL Server 2025 provides multiple new features like enhanced & better security features, faster data load & processing, and seamless DevOps integration which will help developers, data engineers, as well as DBAs.

πŸ’‘ Why Use SQL Server 2025?

SQL Server 2025 delivers unmatched flexibility for hybrid and cloud-native solutions. With AI-assisted performance tuning, enhanced security, and seamless integration with Azure, it is the ideal choice for modern enterprises handling mission-critical workloads.

Advantages of Microsoft SQL Server 2025

A few advantages of SQL Server 2025 are given below for more clarity:

βœ… SQL Server 2025 provides a better Query Optimizer

SQL Server 2025 reduces the requirement for human performance tuning by leveraging AI to automatically adjust query execution plans.

βœ… It offers a better Compression for database Backup

SQL Server 2025 offers a new & better Compression algorithm for database backup which provide a faster backups and smaller backup files, saves a lot of time and storage space.

βœ… Enhanced Security with Ledger 2.0

To satisfy audit and compliance requirements, the Ledger 2.0 functionality ensures tamper-evidence of data modifications.

βœ… It offers Advanced T-SQL Features

SQL Server 2025 supports new T-SQL functions, such as DATE_BUCKET, enhanced STRING_SPLIT, and table-valued functions (TVFs) for JSON.

SELECT DATE_BUCKET('month,' 3, ItemSaleDate) FROM Sales WHERE ItemPrice > 5067.87;

βœ… It Improves Cross-Platform Support

It offers near parity between Windows and Linux environments, expanding deployment flexibility.

βœ… It has a Built-in Git Integration feature

Developers as well as administrators can use GIT directly within SQL Server Management Studio (SSMS 21+). It supports a better source code control and collaboration.

βœ… It provides a better Integration with Azure Arc and Defender

With SQL Server 2025, we can integrate Azure Arc and Defender, enabling unified management across both cloud environments and on-premises environments.

Disadvantages of MS SQL Server 2025

A few disadvantages of SQL Server 2025 are given below for more clarity:

❌ SQL Server 2025 has higher Licensing Cost

Extra feature requires more money. Enterprise and AI-enabled features require higher-cost editions, limiting adoption for small businesses.

❌ Steep Learning Curve

Advanced features, such as Secure Enclaves, AI tuning, and DevOps, require more specialized skills to use effectively.

❌ Resource-Hungry for AI Features

AI-based features need more RAM and CPU, which can strain older infrastructure.

❌ SSRS Not Included by Default

With SQL Server 2025, there is no SSRS (SQL Server Reporting Services). We need to install SSRS separately.

    ❌ Compatibility Issues with Older Apps

    Legacy apps using old T-SQL syntax or deprecated features may fail in SQL Server 2025.

    πŸ”Ή Example: An application using SQL Mail fails post-upgrade as the feature is removed.

    ❌ Not All Features Available on Linux

    Despite improvements, specific tools like SSIS still lack full Linux compatibility.

    MS SQL Server 2025 – New features

    A few new features introduced in MS SQL Server 2025 & are given below for more clarity:

    🌟 Introduced an AI-Powered Query Store for analysis.

    SQL Server 2025 introduces AI Query Store, which uses machine learning to analyze historical query performance and auto-tunes query plans. It adapts execution strategies in real-time to improve performance.

    πŸ”Ή Example: A frequently executed SELECT on a large Orders table is auto-optimized by the engine without manual tuning, reducing latency by 40%.

    🌟 Introduced faster & space-efficient Backup Compression v2

    Backup Compression v2 (LZ4 & Zstandard Support) introduces faster, space-efficient algorithms, such as LZ4 and Zstandard, which significantly reduce backup time and storage size.

    πŸ”Ή Example: Using Zstandard, we can reduce a 500 GB database backup file size by 70% compared to native compression.

    🌟 Query JSON data directly – JSON Table-Valued Functions (TVFs)

    SQL Server 2025 enables you to query JSON data directly using new TVFs, such as OPENJSON(), which transform JSON arrays into table-like structures with ease.

    πŸ”Ή Example:

    SELECT * FROM OPENJSON(@customerJsonData) WITH (CustID INT, CustName NVARCHAR(255));

    It reads a JSON array of objects and returns structured rows.

    🌟 Commit, Push, and Pull SQL scripts directly within Git

    Now, developers or DBAs can easily commit the script, push it, and pull scripts from Git directly within SSMS using Git. It simplifies version control for DB projects and integrates well with DevOps.

    πŸ”Ή Example: Now, using SQL Server Management Studio (SSMS 21+), we can commit a stored procedure update directly to a Git branch.

    🌟 Telemetry real-time Insights Dashboard

    Built-in dashboards now provide real-time insights into workload health, deadlocks, expensive queries, and wait statistics, eliminating the need for third-party tools.

    πŸ”Ή Example: A DBA can view live charts showing top resource-consuming queries and address them before performance degrades.

    🌟 Smart Automatic Failover in Availability Groups

    SQL Server 2025 introduces smart failover logic in Always On Availability Groups (AGs), which considers query health, I/O statistics, and cluster node status for improved high availability.

    πŸ”Ή Example: When a replica shows slow I/O and query failures, it fails over automatically to a healthy node before users experience downtime.

    🌟 A tamperproof Ledger 2.0 (Enhanced Blockchain Auditing)

    Ledger 2.0 offers tamper-evidence for sensitive data through the use of cryptographic hashes and blockchain-style chains. New tools let you verify data integrity externally.

    πŸ”Ή Example: In financial audits, you can prove that transaction records were never alteredβ€”even by DBAs.

    🌟 T-SQL Enhancements

    New language features support improved performance and expressiveness, such as enhanced scalar UDF inlining, STRING_SPLIT with ordinal support, and DATE_BUCKET().

    πŸ”Ή Example:

    SELECT DATE_BUCKET('hour,' 3, ItemSaleDate) FROM Sales;

    Groups datetime values by hour intervals for simplified time-based aggregation.

    🌟 Always Encrypted with Enhanced Secure Enclaves

    Secure Enclaves now support range queries, joins, and aggregates on encrypted columns, making it practical for secure real-time analytics.

    πŸ”Ή Example:

    SELECT COUNT(*) FROM Students WHERE StudentFee > 30000;

    Now works on encrypted Salary columns using secure enclaves.

    🌟 Improved Linux Support

    SQL Server 2025 offers native system integration, support for more distros (e.g., RHEL 9, Ubuntu 22.04), and performance parity with Windows installations.

    πŸ”Ή Example: You can run SQL Server with Always On AG on RHEL with near-identical performance to Windows, ideal for containerized environments.

    πŸ“˜ Real-World Use Cases of SQL Server 2025

    πŸ”Ή Banking Systems – High availability with Always On + ledger for audit trails.

    πŸ”Ή eCommerce Platforms – Real-time insights with columnstore + AI queries.

    πŸ”Ή Healthcare Analytics – GDPR-compliant data masking + encrypted queries.

    πŸ”Ή Logistics and IoT – Edge-to-cloud sync via Azure Arc.

    πŸ”Ή Educational CRMs – Easy scaling with elastic pools and performance tuning.

    βœ… Conclusion

    SQL Server 2025 is not just an upgradeβ€”it’s a reimagination of modern data systems. With cutting-edge AI, hybrid cloud readiness, advanced security, and developer-friendly features, it’s a compelling choice for enterprises aiming for future-proof data architectures. Stay ahead by adopting SQL Server 2025β€”where innovation meets intelligence.

    🧠 FAQs (Β (Frequently Asked Questions) – 20 Interview Questions

    Q: What is new in SQL Server 2025?
    A: AI Query Store, Ledger 2.0, Azure-integrated features, etc.

    Q: How does AI Query Store work?
    A: It learns patterns and auto-adjusts plans for better performance.

    Q: What is Ledger 2.0?
    A: Blockchain-based auditing to prevent data tampering.

    Q: Can SQL Server 2025 run on Linux?
    A: Yes, with enhanced Linux support.

    Q: Is SSRS included in SQL 2025?
    A: No, it’s now a standalone install.

    Q: How to enable Smart Failover?
    A: Through AG properties or PowerShell cmdlets.

    Q: What are the new T-SQL enhancements?
    A: Scalar UDF inlining, JSON TVFs, etc.

    Q: Does SQL 2025 support Azure Arc?
    A: Yes, full hybrid support with Azure Arc is included.

    Q: What is Backup Compression v2?
    A: Uses LZ4/Zstd for faster and smaller backups.

    Q: Can we use Git with SQL Server 2025?
    A: Yes, Git integration is supported via SSMS 21+.

    Q: What’s new in Always Encrypted?
    A: Supports richer types and complex operations.

    Q: Does SQL 2025 support in-memory OLTP?
    A: Yes, with better optimization.

    Q: What is the compatibility level of SQL 2025?
    A: 160+

    Q: How to troubleshoot AI plan failures?
    A: Use Query Store diagnostics and telemetry logs.

    Q: Is SQL 2025 backward-compatible?
    A: Limited; older apps may need modification.

    Q: Can I use Azure DevOps with SQL 2025?
    A: Yes, fully integrated.

    Q: How do we migrate data from SQL 2019 to 2025?
    A: Use Data Migration Assistant or SSMS tools.

    Q: What is Telemetry Insights?
    A: Built-in dashboard for performance and usage metrics.

    Q: Can SQL 2025 handle Big Data?
    A: Yes, supports PolyBase and scale-out features.

    Q: How is security enhanced in SQL 2025?
    A: With built-in ransomware detection, TDE+, and more.

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