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Analytics and AI without the intimidation. Plain-language guides to SQL, data work, and practical AI. Examples you can use at work, a little humor, no PhD required.
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How to check the web sources Gemini cites when it fills your Google Sheet
Fill with Gemini in Google Sheets now shows the web sources behind each cell it fills. Here is how to fill a column with the AI function, find the sources, judge them, and check a random sample big enough to know how far to trust the column.
- SQL · November 10, 2024 · 14 min read
SQL Tutorial 13: Strategies for Maintenance and Optimization
Keep databases healthy over time with backups you can restore, slow query awareness, stats and vacuum concepts, access grants, and on-call hygiene. Close the SQL series with a full path recap and next learning links.
- Analytics · September 6, 2026 · 12 min read
A/B tests intuition for analysts
A/B tests need a clear unit, a primary metric, and honest peeking rules. A green checkmark with +3.2% lift can still be calendar-driven science if you stop early.
- Models · November 9, 2026 · 14 min read
When to choose Qwen over Claude, ChatGPT, or Llama
Do not standardize the enterprise on one foundation model. Use Qwen where multilingual and edge sizes win, Claude for deep English analysis, ChatGPT for turnkey SaaS, Llama where Western tooling matters.
- Data work · September 11, 2026 · 13 min read
When to stop prompting an AI chatbot and do the task yourself
Prompting has a clock. When facts, feeling, or your signature matter, close the chat and do the task yourself.
