Buying Guide - SQL Server 2017 to 2025 FAQ: Frequently Asked Questions About Standard, Enterprise, and CALs

Which SQL Server version makes the most sense for new projects in 2026?

For many new projects, SQL Server 2022 is the balanced standard choice because it offers long support lifecycles, modern security and hybrid features, and a very mature platform. SQL Server 2025 is the stronger future-oriented option if AI-related features, vector search, more modern JSON processing, or an even longer planning horizon are important. SQL Server 2019 is more relevant when existing environments need to be expanded, and 2017 is now mostly a matter of maintaining existing systems rather than new acquisitions. 

What is the most important difference between SQL Server 2017, 2019, 2022, and 2025?

The most frequently sought-after short answer is: 2017 introduced important platform innovations; 2019 saw significant improvements in performance and data virtualization; 2022 focuses on security, high availability, and hybrid scenarios; and 2025 expands SQL Server significantly toward AI, vector search, and more modern data formats. Those primarily seeking stability and maturity often opt for 2022. Those specifically planning to use new data and AI features are more likely to look toward 2025. 

Is it worth upgrading from SQL Server 2017 to 2022 or 2025?

Yes, clearly in many cases. SQL Server 2017 is already out of mainstream support and will only remain in extended support until October 2027. An upgrade to 2022 or 2025 usually provides significantly greater future-proofing, more modern security features, better optimization, and a longer remaining support period. For companies with production-critical core systems, this is one of the most common and sensible modernization steps. 

Is SQL Server 2019 still a good choice?

Yes, but more as a mature transitional or legacy solution. SQL Server 2019 is out of mainstream support but will remain in extended support until January 2030. This makes it still attractive for many existing installations. For brand-new long-term projects, however, 2022 or 2025 are more commonly sought after, as these versions offer a longer-term outlook and more modern features. 

What are companies searching for most frequently regarding SQL Server 2025?

For SQL Server 2025, many search queries revolve around vector data types, vector indexes, AI-related scenarios, the new JSON data model, Managed Identity, enhanced Standard Edition features, and the question of whether an early migration is worthwhile. It is particularly striking that 2025 is not just perceived as a normal version update, but as a leap toward more modern data platform and search scenarios. 

What’s new in SQL Server 2025 Standard Edition?

A frequent search topic is the upgraded Standard Edition. According to current documentation, SQL Server 2025 Standard supports up to 32 cores and 256 GB of buffer pool per instance. Additionally, Resource Governor is included in the Standard Edition, making the edition significantly more appealing for growing business workloads than before. This is precisely why many companies are specifically looking for the differences between SQL Server 2022 Standard and 2025 Standard.

What is the difference between SQL Server Standard and Enterprise?

This is one of the most common purchasing questions of all. In many cases, Standard is sufficient for small and medium-sized businesses and combines performance, security, and cost-effectiveness. Enterprise is geared more toward very large, highly critical, or heavily scaling environments. Those who need maximum availability, top performance, greater consolidation, and the most comprehensive feature set usually look for Enterprise. Those who want a solid, productive business database usually look for Standard. 

When do I need User CALs and when do I need Device CALs?

This question is frequently asked because it directly impacts licensing costs. A User CAL is usually the best choice when a single person works from multiple devices. A Device CAL is often more cost-effective when multiple employees share the same computer, such as in shift work, warehouses, production, or reception areas. In server-plus-CAL models, the correct allocation is more important than many buyers initially realize. 

Is SQL Server 2022 better than SQL Server 2019?

For many productive companies, yes. SQL Server 2022 introduces, among other things, Ledger, Contained Availability Groups, Synapse Link, S3-compatible integration, and several intelligent query optimizations. That is why 2022 is often sought after by companies that want security, modern hybrid architecture, and platforms that allow for longer-term planning. 2019 remains strong, but 2022 is functionally more modern in several areas. 

What new features make SQL Server 2019 attractive?

Typical search reasons related to SQL Server 2019 include data virtualization, big data clusters, UTF-8 support, improvements in query processing, and optimizations for performance-intensive workloads. That’s why many users search for 2019, especially when they want a proven version with modern features but don’t want to jump straight to 2022 or 2025.

Can SQL Server also run on Linux?

Yes. Linux support has been a relevant topic since SQL Server 2017 and remains a key reason for many administrators to search for information. There is also dedicated Linux documentation and release notes available for SQL Server 2025. Those who want to run SQL Server in mixed infrastructures or in a container-based environment therefore often look for Linux support, supported distributions, and upgrade paths to Linux. 

What role does the end of support play in the purchasing decision?

A very significant one. Many search queries revolve precisely around the question of when which version will reach end of support. Currently, the following guidelines generally apply: SQL Server 2017 through 2027 (Extended Support), SQL Server 2019 through 2030, SQL Server 2022 through 2033, and SQL Server 2025 through 2036. Especially for new projects, this is often one of the decisive arguments against older versions. 

Is SQL Server 2025 really relevant for AI and semantic search?

Yes, and that is precisely what is driving much of the current research. SQL Server 2025 introduces vector functions, vector data types, and vector indexes, allowing similarity search and embedding-based scenarios to be mapped much more directly within the database. This makes the version particularly interesting for modern search, RAG-like architectures, and applications that want to query structured and unstructured data together. 

What does the new JSON model in SQL Server 2025 offer?

This is also a highly sought-after topic. Until now, JSON in SQL Server has been processed primarily as text. For SQL Server 2025, a new native JSON model is described that is intended to enable more efficient storage and more secure processing. For applications with API data, event data, or hybrid data structures, this is a real selling point. 

What hardware and Windows questions do users search for most often regarding SQL Server 2025?

Many search queries revolve around compatibility with Windows Server Core, supported Windows Server versions, and general installation requirements. According to current documentation, SQL Server 2025 on Server Core supports, among others, Windows Server 2025 Core, Windows Server 2022 Core, and Windows Server 2019 Core. This is particularly relevant for administrators setting up new server platforms or consolidating existing environments. 

What are the 15 most frequently searched topics related to these products?

When you combine current search patterns, product comparisons, documentation pages, and licensing questions, the most common questions primarily revolve around these topics: best version for new projects, differences between 2017 and 2025, upgrading from 2017 or 2019, end of support, Standard vs. Enterprise, User CAL vs. Device CAL, SQL Server on Linux, new 2025 features, vector search, JSON, hardware compatibility, security, high availability, performance improvements, and the question of which version makes the most economic sense for which company. It is precisely these patterns that appear time and again in the current product and lifecycle documentation.

 

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