Data Analytics & Business Intelligence

All numbers below are chain-derived via eth_getLogs against public RPCs. Nothing is self-reported,...

Explore Apache Iceberg metadata hierarchy, schema evolution, hidden partitioning, and concurrency model.

GBase 8a fully supports OLAP window functions, making it a powerful gbase database for analytical...

When people first start learning ClickHouse®, they usually focus on SQL queries, table engines, and...

Lower compute spend by optimizing queries: clustering keys, materialized views, predicate pushdown and scan reduction for Snowflake, BigQuery, Redshif

apache pulsar vs kafka is the messaging question that every senior data engineer has answered twice...

kafka connect looks like "just another Kafka client" to a junior engineer — senior engineers know it...

Introduction This week, I started learning Data Engineering concepts, and one of the most important...

David Ohnstad explains why federated data architectures create accountability gaps for PMs. Learn how schema enforcement and governance prevent revenue att

David Ohnstad reveals why data product managers struggle in federated architectures. Learn how organizational design undermines governance and trust in dec

Monitoring is one of the most critical aspects of operating any production database environment. As...

Most dynasty fantasy football value sources are either crowdsourced votes or locked behind paywalls....

A build-in-public failure story about why marketplace scrapers need state, sold signals, seller context, condition, and price history instead of only clean prod

A practical checklist for making marketplace scrapers safer: sold state, disappearance, seller country, condition, precision filters, price history, and review

The lakehouse community spent this week arguing about versions, and the arguments mattered. Parquet...

AI for Data Analysis: What Actually Works (And What's Just Demo Magic) Last month I...

Messy CSV exports are a tax on every data task: stray whitespace, duplicate rows, inconsistent...

How we built per-second video watch heatmaps using HyperLogLog sketches in Postgres, with mergeable

Release: datasette 1.0a33 This alpha is a significant step on the road to a stable 1.0, finally extending the ?_extra= pattern I introduced in Datasette 1.0a3 t

Tabelas web são strings. Tudo é string. Mas quando você exporta para JSON ou SQL, você...

This article provides a detailed walkthrough on using Apache SeaTunnel 2.3.9 to perform full data...

In the previous article, I extended a small Python data quality ETL starter from validation and...

If you're storing analytics events, logs, or any append-only data as Parquet files in object storage,...

Pressure decay is the standard method for leak testing sealed pneumatic assemblies. Getting accurate...

Exporting Data from ClickHouse®: Formats, Methods, and Best Practices Data export is a...

Background DBT open whole new world of how data-transformation happen, DBT brings software...

A Rust Polars plugin for high-speed PII masking - RUT, CPF, cards, IBAN. Honest benchmarks vs pure-Python regex, air-gapped, GDPR-ready. MaskOps 2.0.

If you have ever tried to build a crypto app from scratch, you already know where the time goes. It...

A reproducible recipe: load 18M+ Polymarket price snapshots, label resolved markets, and backtest a favorite-longshot strategy in ~40 lines of pandas. With the

Today I got hands on my first data analytics project which was a healthcare dataset. First I got the...

I pulled all 59 of my dev.to articles via API and analyzed view counts. 76% have 0 views. Here’s the Python script I used, what the data says, and exactly what

The long-standing assumption that prediction markets are highly efficient “wisdom of the crowd”...

Everyone says: “Learn Python, build projects, become a data analyst.” But that advice is...

Most analytical SQL is a handful of repeating patterns. Master joins, group by, window functions, CTEs, cohorts, funnels, and retention, and you can answer almo

Hello everyone! Following up on my previous post, Day 1 of my Modern Data Stack migration was an...

I recently built GeoPrizm, a free and open-source dashboard for tracking bilateral relations through...

What is Power BI? A Complete Beginner's Guide to Microsoft's Data Platform ...

Query large local files with industry-grade SQL — without uploading anything. Utilora SQL Explorer...

← Voltar ao blog GUIA · COMPARATIVO Como escolher a melhor inferência estatística...

Your Pipeline Is 21.2h Behind: Catching Finance Sentiment Leads with Pulsebit We recently...

← Voltar ao blog GUIA · INFERÊNCIA QUANTITATIVA Inferência Estatística Quantitativa B3:...

DuckDB Delta Lake Writes, Cross-DB Query Planning, and Pterocos SQLite/DuckDB Editor ...

← Voltar ao blog GUIA · COMPARATIVO Como escolher a melhor inferência estatística...

How TopVideoHub moved 12M daily video view events off SQLite onto TimescaleDB hypertables: chunking,

Your 24h momentum spike of +0.750 in inflation sentiment is a stark indicator of incoming trends. We...

Privacy-First Analytics Is Not Blind Analytics is a practical operating principle, not a slogan. The...

Introduction Before I enrolled in this data analytics program, Excel was something I associated...

Dataflows are a type of cloud-based ETL (Extract, Transform, Load) tool for building and executing...