SQL Server statistics internals: decoding STATS_STREAM byte by byte across STAT_HEADER, DENSITY_VECTOR and HISTOGRAM

SQL Server Statistics Internals: Decoding STATS_STREAM Byte by Byte in 5 Proven Steps

SQL Server statistics internals decoded: how the histogram drives cardinality estimation, and an oracle-guided method with T-SQL and Python to map STATS_STREAM byte by byte on your own build.

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SQL Server Performance: 7 Brilliant 2025 Engine Internals

On July 14, 2026, SQL Server 2016 reached end of support, and Microsoft's own blog put it plainly: plan your next steps. For thousands of estates the next step is SQL Server 2025, generally available [...]

SQL Server 2025 Expensive Queries: 7 Proven Ways to Find and Fix Them by Latency and Resource Cost

"Expensive queries" is a phrase that hides two different problems. One is response time: a statement the application waits too long for. The other is resource efficiency: a statement that burns CPU, logical reads and [...]

SQL Server 2025 Performance, Scalability and High Availability: What Changed On-Premises and in the Cloud

SQL Server 2025 went generally available on 18 November 2025 and, as of this writing, sits at Cumulative Update 8 (build 17.0.4075.5, 13 August 2026). Strip away the AI features that took most of the [...]

btree_gist improvements in PostgreSQL 18

SQL Server 2025 High Availability: Always On, Failover Clustering, and Maximum Availability

SQL Server 2025 High Availability has reached a new frontier with Microsoft's most advanced release to date. Whether you are a database administrator architecting enterprise workloads, a cloud engineer designing multi-region deployments, or a DevOps [...]

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SQL Server 2025

SQL Server Statistics Internals: Decoding STATS_STREAM Byte by Byte in 5 Proven Steps

SQL Server Performance: 7 Brilliant 2025 Engine Internals

SQL Server 2025 Expensive Queries: 7 Proven Ways to Find and Fix Them by Latency and Resource Cost

SQL Server 2025 Performance, Scalability and High Availability: What Changed On-Premises and in the Cloud

SQL Server 2025 High Availability: Always On, Failover Clustering, and Maximum Availability