https://sudonull.com/order-by-and-primary-key-in-clickhouse-index-selection
How to correctly choose ORDER BY in ClickHouse: sparse index, column cardinality, equality vs range, verification via EXPLAIN. Rules and examples for gambling.
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In this project
https://sudonull.com/mbr-324-bytes-stm32f407ve-compact-bootloader
Minimal primary bootloader for STM32F407VE (324 bytes). Vector validation, jump to 0x08060000, LED blinking on error. Code + Makefile for ARM-GCC.
https://sudonull.com/ai-will-not-replace-copywriters-reality-barrier
Learn why AI doesn't write like a human due to lack of access to primary data. Analysis of LLM limitations for copywriters and journalists. Read the key differences.
https://sudonull.com/mergetree-in-clickhouse-granules-parts-and-sparse-index
MergeTree structure using a bids table example: part, granule, mark, merge of parts, ORDER BY vs PRIMARY KEY, partitioning, EXPLAIN indexes, partition management.
From other projects
https://ymaho.com/renewable-energy-surpassed-coal-what-s-next-analysis
In 2023, renewable energy became the primary source of electricity for the first time. Find out how this will change your bills and the global economy.
https://lrivo.com/stade-de-france-french-football-s-long-term-home
Discover how the French Football Federation secured Stade de France as its primary venue for major matches and the Coupe de France final until 2055. Learn about the phased agreement and future plans.
https://ymaho.com/how-economic-sanctions-work-in-international-relations-guide
Learn how economic sanctions work in international relations, including primary vs secondary sanctions, compliance, effectiveness, and business risk assessment. Expert strategic guide.
https://ymaho.com/dollar-exchange-rate-rises-slightly-ahead-of-powell-s-final-meeting
DXY index rose to 99.00, euro fell to $1.17. Markets await Fed verdict on 04/29/2026. Find out why Powell's departure on May 15 and the war in Iran make the dollar the world's primary safe-haven asset.
From the web
Finding Primary Sources | Getting Started with Primary ...
https://www.loc.gov/programs/teachers/getting-started-with-primary-sources/finding/
The Library of Congress makes millions of unique primary sources available online to everyone, everywhere. There are a few different ways to discover the best primary sources for you.
What is a Primary Source? - Library Research Guide for the ...
https://guides.library.harvard.edu/HistSciInfo/primary
Oct 14, 2026 · Primary sources provide first-hand testimony or direct evidence concerning a topic under investigation . They are created by witnesses or recorders who experienced the events or conditions being documented.
Primary source - Wikipedia
https://en.wikipedia.org/wiki/Primary_source
In the study of history as an academic discipline, a primary source (also called an original source) is an artifact, document, diary, manuscript, autobiography, recording, or any other source of information that was created at the time under study. [1] It serves as an original source of information about the topic.
JSTOR Primary Sources | JSTOR
https://www.jstor.org/site/primary-sources/
Primary source collections currently available on JSTOR are multidisciplinary and discipline-specific and include select monographs, pamphlets, manuscripts, letters, oral histories, government documents, images, 3D models, spatial data, type specimens, drawings, paintings, and more.
Finding Primary Sources for Teachers and Students
https://www.archives.gov/education/research/primary-sources
Apr 6, 2018 · Learn how to use online primary source documents from the National Archives for classroom and student projects. Explore DocsTeach, catalog, exhibits, and more resources for historical research and learning.
Primary vs. Secondary Sources | Difference & Examples - Scribbr
https://www.scribbr.com/working-with-sources/primary-and-secondary-sources/
Jun 20, 2018 · Learn the difference between primary and secondary sources, and how to use them in your research. Find out what counts as a primary or secondary source, and how to cite them correctly.
21 Examples of Primary Sources (A to Z List) - Helpful Professor
https://helpfulprofessor.com/primary-source-examples/
Nov 29, 2023 · Learn what primary sources are and see 21 examples of different types of primary sources. Primary sources are pieces of data directly connected to an event, created at the time of the event, and revealing new information about it.
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