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I Overengineered My Personal Finances into a Local-First Lakehouse (DuckDB + Polars + SQLite)

I Overengineered My Personal Finances into a Local-First Lakehouse (DuckDB + Polars + SQLite)

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7 min read
Mastering Advanced SQL with a Hospital Dataset: Window Functions, Joins, CTEs and Subqueries

Mastering Advanced SQL with a Hospital Dataset: Window Functions, Joins, CTEs and Subqueries

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12 min read
Understanding SQL Concepts

Understanding SQL Concepts

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7 min read
How Do AI Companies Get Their Training Data?

How Do AI Companies Get Their Training Data?

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39 min read
Introduction to SQL Window Functions, CTEs, Joins & Subqueries

Introduction to SQL Window Functions, CTEs, Joins & Subqueries

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12 min read
Pharmacy Sales Data: A Pandas Project

Pharmacy Sales Data: A Pandas Project

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5 min read
I analyzed 12,000 ready-made web scrapers. 1 in 10 popular ones fails more than 10% of the time.

I analyzed 12,000 ready-made web scrapers. 1 in 10 popular ones fails more than 10% of the time.

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2 min read
Tracking the US Visa Bulletin as Open Data (Not Screenshots)

Tracking the US Visa Bulletin as Open Data (Not Screenshots)

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3 min read
📊 Et si les données du recrutement répondaient à nos questions ?

📊 Et si les données du recrutement répondaient à nos questions ?

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5 min read
One graphics kit, eleven bikes: storing dirt bike fitment as data

One graphics kit, eleven bikes: storing dirt bike fitment as data

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2 min read
Same Amazon product, five EU stores: Amazon's own prices differ by a median 29%

Same Amazon product, five EU stores: Amazon's own prices differ by a median 29%

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3 min read
BigQuery BI Engine deserves a benchmark before you dismiss Looker Studio as slow

BigQuery BI Engine deserves a benchmark before you dismiss Looker Studio as slow

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2 min read
VLOOKUP says #N/A, COUNTIF says the value is there: 18 look-alike pairs tested in a real Excel

VLOOKUP says #N/A, COUNTIF says the value is there: 18 look-alike pairs tested in a real Excel

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4 min read
Freshness Watermarks Belong on Every Row, Not the README

Freshness Watermarks Belong on Every Row, Not the README

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5 min read
LYM: A Python CLI Tool for Analyzing Trading Strategies from Excel

LYM: A Python CLI Tool for Analyzing Trading Strategies from Excel

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1 min read
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