SQL Basics: Talking to a Database for the First Time
Every company you will ever work for stores its data in a database. Not CSV files. Not Excel sheets. A database. Tables of users. Tables of transactio…
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archery-cli: Connect AI Tools to Your SQL Audit Platform
At my company, we use Archery for SQL audit and read-only queries against our databases. Archery has a nice web UI, but our AI tools (Claude Code, Cur…
SQL Server Running Slow? Here's What Actually Fixes It.
Every growing business hits this wall at some point. The application that worked perfectly six months ago now takes forever to load. Users start compl…
Finding a Practical Analytics Format for Structured JSON Logs
Structured JSON logs are easy to produce and hard to analyze at scale. They carry useful context, but that context is nested, optional, inconsistent, …
Subqueries vs CTEs: When, Why, How.
With a background in Python programming, Learning SQL started feeling like a step back, every line is independent of the next and so far nothing seeme…
Understanding Subqueries vs CTEs in SQL (With Examples)
When working with SQL, especially in data analysis, you’ll often need to break down complex queries into manageable pieces. Two powerful tools that he…
Анализ и модернизация коннектора баз данных с помощью AI-агентов
4-я статья из цикла туториалов о вариантах кастомизации своего бизнес-портала в Битрикс24. Сегодня рассказываем о работе с уже существующим проектом ч…
Subqueries and CTEs in SQL
When working with SQL, you eventually run into situations where a single query just isn’t enough. You need to break a problem into parts, compute an i…
SQL Window Functions and CTEs
You can do quite a lot with some of the most popular SQL queries such as SELECT, WHERE, and JOIN. But there exists some question that you cannot answe…
Indexing Strategies for Faster Database Queries
TL;DR Indexes = direct lookups — milliseconds vs full table scans (seconds). B-tree for most queries — Supports = , < , > , BETWEEN , LIKE 'pref…
Your Latency Problem Isn't Model Size (It’s Your Routing)
We spent months chasing latency. Bigger GPUs, smaller batch sizes, every optimization trick in the book. Yet, our chatbot still crawled at 3s+ per res…
Up down or Down up. Understanding Subqueries and CTEs in SQL: A Comprehensive Guide
Introduction When working with databases, there comes a time when a simple SELECT statement is not enough to answer complex questions. Imagine you nee…
SQL vs NoSQL — A Decision Framework That Actually Works
Every developer argues about SQL vs NoSQL. Most of the advice online is surface-level. Here's a practical decision framework based on how real systems…
5 SQL FUNCTIONS EVERY BEGINNER SHOULD KNOW
"Data is the new oil — and SQL is the refinery." — Anonymous Data Engineer Image: A developer working with databases — the everyday environment of an …
Mastering the SQL Analytical Toolkit
As a budding data professional, I recently completed an intensive SQL Week 2 Assignment that pushed me from basic queries into more powerful territory…
Level Up Your SQL: Subqueries & CTEs in the Real World
In the first SQL article, you met the basics: tables, data types, simple SELECT s, and filters. Now you’re ready for the point where “one query” quiet…
Subqueries vs CTEs in SQL: A Complete Guide for Beginners
When I first started learning SQL, I kept hearing two terms thrown around: subqueries and CTEs . They seemed to do similar things, and I wasn't sure w…
The Largest SQL Injection Breach Ever — How 77 Million PSN Accounts Were Exposed published
⚠️ Educational content only — this article is for cybersecurity awareness and defensive learning. 💥 The Largest SQL Injection Attack Ever Recorded# 💥 …
DuckDB in the Wild: What 6 Minutes of Benchmarking Across 4 Machines Taught Me About Real-World Performance
Character Design I care more about "can we ship this?" than "is this theoretically optimal?" When I pick data tools, I usually ask three questions: Wi…
PostgreSQL Ecosystem Expands with ULAK Extension & Open-Source Xata; SQLite Vector Search Advances
PostgreSQL Ecosystem Expands with ULAK Extension & Open-Source Xata; SQLite Vector Search Advances Today's Highlights The PostgreSQL ecosystem see…
The $15 Per Ride You Didn't Know About: What 243 Million NYC Taxi Rides Reveal
The $15 Per Ride You Didn't Know About: What 243 Million NYC Taxi Rides Reveal Lyft pays wheelchair-accessible drivers 204% of fare — a flat ~$15/ride…
Why "Vibe Coding" Your Data Warehouse is a Terrible Idea
Recently, the term "vibe coding" has been everywhere. It’s that practice of sitting down, opening your editor (often with an AI assistant), and just w…