Tech Skills
Data Analytics & Business Intelligence
Excel, SQL, Power BI, Tableau — turn raw data into business decisions
Skills in this topic
7 skills — Sign in to track your progress
Data Literacy
beginner
Write SELECT queries with JOIN and GROUP BY
Excel & Spreadsheets
beginner
Build a dynamic dashboard with pivot tables and slicers
SQL Analytics
intermediate
Write window functions (ROW_NUMBER, LAG, LEAD)
BI Tools
intermediate
Build an interactive dashboard from a SQL source
Python for Data
intermediate
Clean and transform a messy dataset with pandas
Data Storytelling
intermediate
Build a stakeholder dashboard with a narrative structure
ML for Analytics
advanced
Build a churn prediction model

Dev.to · Osborn Sifuna
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3h ago
Power BI Is More Than Dashboards: Why It Belongs in Modern Data Work
Despite the rise of Python, R, notebooks, cloud warehouses, and custom analytics platforms, Power BI...

Dev.to · lidychic
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6h ago
Coût réel d’un appel vocal en production : 12 mois de données et 6 erreurs à corriger
En mars 2024, notre plateforme d’agents vocaux a traité 1 200 000 appels en Suisse romande, et la...

Dev.to · George Kioko
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
12h ago
I build the scrapers the data vendors run on, and I need to tell you what you are actually paying for
I have built the scraping guts behind more "real time business intelligence" products than I would...

Dev.to · applekoiot
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
12h ago
Modeling Supply Chain Evidence: Condition, Asset, and Custody Data Schemas for IoT Hardware
How to structure IoT sensor output into three evidence dimensions with example data models and API payload schemas.

Dev.to · Etrit Neziri
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
14h ago
Web Scraping with Python in 2026: Best Libraries and Anti-Bot Strategies
Web Scraping with Python in 2026: Best Libraries and Anti-Bot Strategies Web scraping in...

Dev.to · Sharmin Sirajudeen
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
20h ago
The HiPPO is always right
Why the people running a company can't actually see it — and why traditional analytics keeps producing conclusions nobody ever verifies, from the HiPPO to the A

Dev.to · Omar Eldeeb
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
20h ago
How to Extract Saudi Arabia Property Data Across Bayut.sa, Wasalt.sa, Aqar.fm and PropertyFinder.sa
A practical, verified guide to collecting Saudi Arabia property data from the major portals — including the REGA advertisement-license trick that lets you dedup

Dev.to · Omar Eldeeb
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
20h ago
How to Build an H-1B Salary Database by Employer (the Real Data Source + Python)
A practical guide to querying H-1B salary data by employer and role programmatically, using the authoritative DOL OFLC LCA disclosure files with runnable Python

Dev.to · Omar Eldeeb
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
20h ago
Understat xG Data Export: How to Pull Expected Goals Programmatically (Python + CSV)
A practical, honest guide to Understat xG data export — how the data is embedded in the page, a runnable Python scraper that decodes it, and how to dump league,

Dev.to · Vinicius Pereira
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
21h ago
What changed since the last scrape? A small change-detection layer (stdlib only)
Most of my scrapers answer one question: what's on the site right now. But that's almost never the...

Dev.to · Mohammad Meezan
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
21h ago
My first SQL interaction
Today was my first day of learning SQL and my interaction with it was very unique its not like excel...

Dev.to · Hamza Khan
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
SmiteTracker: A Free Platform to Track SMITE Match History, Ranked Stats, and Player Performance
SMITE is a competitive multiplayer game where every match provides an opportunity to learn, improve,...

Dev.to · Manveer Chawla
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
When to denormalize, when to join: A ClickHouse guide (2026)
Denormalization has been the standard approach to analytical data modeling for good reason. Moving...

Dev.to · Gabriel Mbuva
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
Power BI: Modelling, Schemas, Joins and Relationships
Power BI is a data visualization and business intelligence tool designed for business professionals...

Dev.to · Vinicius Fagundes
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
Your p-value answered a question you didn't ask.
You ran the A/B test. It came back p = 0.08. "Not significant." So you killed the feature and moved...

Dev.to · Luis Monasterios
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2d ago
Data Analysis SQL: Asking the right questions and using the right tools
If you've ever practiced SQL interview questions, you have almost certainly crossed paths with this...

Dev.to · Bethuel Ngetich
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
Why Is Your Power BI Dashboard So Slow? 🐌
Have you ever opened a dashboard and it took forever for it to load? Before blaming Power BI, take a...

Dev.to · Sylwester Kowal
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
How to Analyze Storefront Elements by Revenue Impact, Not Just CTR
Most ecommerce teams can tell you where traffic comes from. Fewer teams can tell you which storefront...

Dev.to · NexGenData
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
Competitor Pricing Intelligence: SaaS + Shopify Combined
Every pricing team eventually faces the same question from the CEO: "are the competitors still...

Dev.to · Robert Floyd Dugger
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
The Other Side of the Content Pipeline
This morning I was skimming through 20,675 images on my Nitro 5 and slowly realizing what I was...

Dev.to · Patrick Ryan
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
Why *= 2 is slower than = col * 2 in Pandas — and what strace shows about abstraction cost
This problem looks trivial, but I got curious about what different Pandas update strategies actually...

Dev.to · Paradane
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
3d ago
CSV File Difference Detection Techniques for Large Datasets - Paradane
Explore practical methods for comparing large CSV files with dynamic row structures. Learn Python-based approaches and schema alignment strategies to handle mul

Dev.to · Abhishek Singh
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4d ago
I built a dataset of 50,000 debugging sessions — and what I found surprised me
Most bug datasets only tell you: "Bug was fixed in 23 minutes." They don't tell you what happened...

Dev.to · Edge Lab
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4d ago
StatsBomb Open Data Reveals: Late Goals Aren't Random
When the referee checks their watch in the 85th minute, something predictable happens in soccer—but...

Dev.to · Kanishga Subramani
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4d ago
Day 44 – Exploring ClickHouse® System Tables for Troubleshooting
Introduction ClickHouse® provides a rich collection of built-in system tables that expose...

Dev.to · Kanishga Subramani
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4d ago
Day 43 – ClickHouse® Join Types and Performance Implications
ClickHouse® Join Types and Performance Implications Introduction JOIN...

Dev.to · hermess Agentt
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4d ago
NodeQuest Level 2: Data Router — can you filter faster than me? (free browser game)
Today's challenge: Level 2 — Data Router 🎯 Sort incoming data to the right department using filters...

Dev.to · Nata Rizki
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4d ago
YAN — Yet Another Notation: A Data Format Designed for Humans
YAN — Yet Another Notation A human-readable, human-writable, and machine-readable data interchange...

Dev.to · Jorge Martinez
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4d ago
Algorithmic Entity Resolution in Music Metadata
In the global streaming economy, Spotify, Apple Music, and other DSPs process billions of plays...

Dev.to · GrahamduesCN
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4d ago
MCP in 2026: The numbers behind the ecosystem explosion
I spent an afternoon digging through the MCP ecosystem numbers. Here is what I found. The...

Dev.to · Lucas Braun
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
SQL window functions: what separates a mid-level from a senior developer
Most developers know SELECT, JOIN, and GROUP BY. Window functions are where the gap between mid and...

Dev.to · Allen Yang
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Manage Excel Worksheets in Python: Create, Copy, Delete, and Rename
Worksheets are the fundamental units for organizing and separating data in Excel files. A single...

Dev.to · Nick
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Part 15: Workflow Patterns and Recipes - Data Transformation
As we conclude this 15-part series on Vyshyvanka, we want to leave you with practical tools. One of...

Dev.to · Kanishga Subramani
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
ClickHouse 26.6 latest update
ClickHouse 26.6 Deep Dive: Streaming Queries, MPP Execution, Geospatial Analytics, and...

Dev.to · Parsify.tools
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
How to Stream & Flatten 1GB+ JSON to CSV in the Browser Without Memory Leaks
As developers, data engineers, or analysts, we’ve all been there: you download a massive database...

Dev.to · Seenivasan A
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
5d ago
Power BI
In today's data-driven world, organizations collect large amounts of data every day. However, raw...

Dev.to · NexGenData
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Asian Market Data Scrapers for Public Business Research
Ask any Western fund manager what their best source is for Bombay Stock Exchange equities, Hong Kong...

Dev.to · member_ce2645ea
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
I Tracked My Body Fat for 90 Days and Built a Calculator That Actually Makes Sense
For three months, I weighed myself every morning and took body measurements every Sunday. I used a...

Dev.to · NexGenData
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Company Registry Data Tools for Business Intelligence
Company registry data is the backbone of every credible KYC, KYB, and M &A workflow — yet it...

Dev.to · Joichiro Mitaka
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Addressing the global namespace
There is a moment in every data hoarder's life — and in every small media shop's IT history — when...

Dev.to · Kanishga Subramani
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Day 35 – ClickHouse® and S3 Integration: Querying Data Lakes
Introduction Modern organizations generate massive amounts of data that need to be stored...

Dev.to · Scale
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Debugging Data Unload Failures in GBase — How to Handle Invalid Data and Export Breakdowns
In enterprise database systems, exporting data is a critical operation for analytics, backup, and...

Dev.to · Muhammad Bin Nazeer
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
Building a Sports Data Pipeline: Lessons from Scotland primed for game of their lives against fallible Brazil
Building a Sports Data Pipeline: Lessons from Scotland primed for game of their lives...

Dev.to · manja316
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
What 86 Days of Clean Prediction-Market History Actually Shows
I archived 17.2M Polymarket price snapshots on one Mac. Here's what the resolved data says about whether the crowd is actually calibrated — and how to check it

Dev.to · Joud Awad
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
6d ago
49/60 Days System Design Questions
Your data team just opened a $4,200 BigQuery bill. For a single month. One analyst. 12 queries. The...

Dev.to · Pulsebit News Sentiment API
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Your Pipeline Is 29.2h Behind: Catching World Sentiment Leads with Pulsebit
Your Pipeline Is 29.2h Behind: Catching World Sentiment Leads with Pulsebit We recently...

Dev.to · Maria-Luise Volkmar
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
The Bosman Effect, in one open dataset: how World Cup squads went global (1990 to 2026)
In 1990, roughly one in four players at the FIFA World Cup was based at a club outside the country...

Dev.to · Myroslav Martsin
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
1w ago
Most CSV libraries go one way or skip types. csv-pipe does both, typed, and parses several times faster than papaparse. Live playground in the post.
csv-pipe: read and write CSV in TypeScript, several times faster than papaparse ...
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