About SQLPress
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SQLPress publishes articles about how database systems behave: query planning and execution, storage and internals, concurrency, and the operational side of running these systems in production.
The audience is people who already write SQL — application developers, analysts, and database administrators — and who will notice when a claim is hand-waved.
The standard
Documentation describes what a system does. Most articles describe what to do about it. The layer in between — why the system behaves that way, measured on a stated setup, with the boundary of the result written down — is what this site is for.
Every article that reports numbers declares the environment they came from: the systems and their exact versions, the hardware, the dataset, the relevant configuration, and whether the workload was synthetic or real. That block is not a formality. It is the difference between a result you can check and a number you have to trust.
Every factual claim points at its source: official documentation, source code, a mailing list thread, release notes, the SQL standard, or a measurement published here. Where a claim rests on someone else’s work, that work is named.
What is not published here
- Recommendations produced for commercial reasons. There are no affiliate links and no sponsored content
- Comparisons without measurements, or verdicts without the condition that would reverse them
- Rewritten documentation. If the docs answer it, the docs get linked and the article covers what they leave out
- Synthetic benchmarks presented as production reality
Corrections
Claims here are checkable, which means some of them will be checked and found wrong. Corrections are published in place with the date and the evidence that changed the conclusion — not removed quietly.