#sql

15 məqalə

A Brief History of SQL: The Language That Refuses to Die

SQL was born in 1973 at IBM, survived the NoSQL rebellion, and now powers 55.6% of all developers. Here's how.

23 mart 202617 dəq.79

Data Analyst Roadmap 2026: From Zero to Hired in 20 Weeks

A 20-week roadmap to become a data analyst: SQL, Python, BI tools, AI integration, portfolio strategy, and what interviews actually test.

30 yanvar 202615 dəq.41

#ai #data-engineering #llm

Graph Database vs Vector Database: One Finds Similar Things, the Other Finds Connected Things

Graph databases find connections. Vector databases find similarities. When to use which, real benchmarks, and why PostgreSQL might replace both.

23 yanvar 202615 dəq.40

#backend #career #python

Backend Engineer Roadmap 2026: What Actually Matters (And What Doesn't)

Backend engineers average $174K in 2026. Here is the real roadmap — languages, databases, cloud skills, and a 12-month plan.

16 mart 202615 dəq.10

#ai #analytics #career

Data Analyst in 2026: The Role AI Changed But Couldn't Kill

AI automated 30-40% of the old analyst job. The remaining 60% pays better than ever. Here is what the role actually looks like now.

23 fevral 202611 dəq.9

#career #data-engineering #opinion

Correlated vs Non-Correlated Subqueries: The SQL Concept That Breaks Production at 2 AM

The real difference between correlated and non-correlated subqueries, with benchmarks, optimizer behavior, and the NOT IN NULL trap.

7 yanvar 202615 dəq.8

#ai #python #llm

Build a RAG Chatbot in 30 Minutes with LangChain and Neon PostgreSQL

Build a RAG chatbot with LangChain, OpenAI embeddings, and Neon PostgreSQL. pgvector, no Pinecone, full Python code, 30 minutes.

28 mart 202614 dəq.6

#postgresql #performance #backend

Your Database Indexes Are Wrong — The $40K/Month Query You Don't Know About

A single missing PostgreSQL index cost $40K/month. Partial indexes, covering indexes, BRIN — the indexing tricks most devs never learn.

10 aprel 202615 dəq.5

#database #sql #backend

SQLite Is the Most Deployed Database on Earth and You're Ignoring It

One trillion SQLite databases exist right now. Turso, Litestream, and D1 fixed every limitation. Stop defaulting to Postgres.

17 aprel 202615 dəq.3

#data-engineering #sql #open-source

dbt Is Not Enough: SQLMesh, Coalesce, and the Next Wave of Data Transformation

SQLMesh is 9x faster than dbt, with free dev environments. Fivetran-dbt merger raises lock-in concerns. Coalesce offers visual SQL. Decision framework.

24 mart 202615 dəq.3

#sql #data-engineering #opinion

PostgreSQL Is the Only Database You Need in 2026

PostgreSQL won the Stack Overflow triple crown 3 years straight. With JSONB, pgvector, PostGIS, and full-text search, it replaces 5 databases.

19 mart 202614 dəq.3

#career #data #sql

How I Got My First Analyst Job in Azerbaijan (And What I'd Tell My Younger Self)

From a management degree to Credit Analyst at Unibank Baku. My real path into data — SQL, banking, and grit.

20 fevral 202619 dəq.3