Data Analytics & Business Intelligence

The Problem We Were Actually Solving As a data engineer, I've spent years building data...

The Problem We Were Actually Solving Our problem wasn't "how to store and query data from...

The Problem We Were Actually Solving As a data engineer, I've often found myself trying to...

Every Python developer working with large files has hit this wall at least once. You have a CSV with...

When I started learning SQL, I could write SELECT * FROM table and that was about it. The problem...

Incremental refresh, join MVs, and nested pipelines for hybrid workloads. In real-time analytics,...

You're looping over a DataFrame. It feels natural. It's killing your performance. # What most...

Your organization uses Tableau for executive dashboards, Power BI for operational reports, and...

Release: datasette-agent-charts 0.1a2 "View SQL query" buttons below rendered charts. Tags: datasette , datasette-agent

Every data pipeline you build to move data from one system to another costs you three things: time...

The strange thing was that the first real scaling problems had nothing to do with scale. Or at least,...

Having observed dozens of internal data initiatives across SMBs, I've noticed consistent thresholds...

This is Part 7 of a 15-part Apache Iceberg Masterclass. Part 6 covered the write process and...

{ "platform": "ig-carousel", "hashtags": [ "enterprise-AI", "AI-onboarding", ...

This is Part 4 of a 15-part Apache Iceberg Masterclass. Part 3 covered metadata-driven performance....

If you have ever tried to build a sports dashboard, an arbitrage scanner, or an automated trading...

A practical introduction to sentiment scoring for finance news

This is Part 3 of a 15-part Apache Iceberg Masterclass. Part 2 covered the metadata structures of all...

1. Overview In modern data architectures, real-time capture and processing of data changes...

How to model thousands of possible market paths instead of trusting one average return — a working Python approach to retirement projections and the assumptions

Enterprise AI rollouts stall on data fragmentation, not weak models. A developer's breakdown of the entity resolution, schema alignment, and permission work cop

A practical guide covering temporal vs n8n vs airflow for data pipelines.

TLDR Runtime governance breaks when one dataset is asked to support two different...

Every month, the same thing happens in offices everywhere: someone has to open 12 monthly reports...

While Magento maintains robust e-commerce capabilities, its native dashboard lacks the dynamic...

This is the second in a series of posts documenting the architecture, implementation, and lessons...

An honest dev write-up of the dataset behind a market-structure analysis on BIN sponsor concentration across 141 crypto cards

Storing and querying time-series price data efficiently

In v60 we put AI features in all plans, including Open Source. With v61, we give you the controls for...

The Rough Index is a lightweight, built‑in indexing mechanism of GBase 8a's columnar storage engine....

Release: datasette-agent-charts 0.1a1 More color! Bar and waffle charts without a color column are shaded by magnitude with a sequential color scheme; color col

Outbound Access Protection for semantic models changes Power BI governance from report permissions to workspace-level network controls.

How to Measure a Ship's CO₂ Emissions From Land Here's a question that sounds simple until...

Someone asks for data. You run the query. Now what? Export to CSV, attach it to an email, hope...

A complete R tutorial for creating publication-ready scatter plots with linear regression, including multi-panel layouts using layout() and automatic R²/p-value

The Surprising Cost of Athena Queries We started by investigating our Athena queries,...

I spent 3 weeks building an open-source pipeline that scores permanence risk for every blue carbon...

How to beat government statistic latency by building a high-frequency price tracker using Python and SearchApi.

chime data engineering interview questions mirror how neobank and consumer-fintech teams vet...

I analyzed an early ValidaTrip corpus of pasted trip plans to answer a narrow question: How often...

PostgreSQL: New Time-Series Extension & Replication Monitor; DuckDB in Production ...

TL;DR ClickHouse has supported DELETE operations since 2018. As of 2026, it ships four...

The United States is in the grip of an opioid crisis. Between 2019 and 2023, fentanyl-related...

Correlation helps you understand whether two variables move together and how strongly they are...

Most Airflow problems don’t start in production. They start inside a large DAG file. One duplicate...

Your inbox is data. Query it like data. The 2-Minute Version: # Install and ingest your...

A lot of systems begin with a single database. Usually PostgreSQL. And honestly, in the beginning,...

I put a data pipeline into production paying 30x less than a traditional setup would require. Over...