BlinkSQL Start learning

PostgreSQL-first · built for the AI era

Learn databases that

Interactive PostgreSQL lessons with a real query engine in your browser, an AI tutor at your side, and tracks from your first SELECT to pgvector and RAG.

Explore the tracks Open the playground

ask in English → get SQL

✦

thinking… Run your own →

▸SELECT & WHERE ▸JOINs demystified ▸GROUP BY + HAVING ▸Indexes & EXPLAIN ▸VACUUM & autovacuum ▸pg_dump backups ▸Roles & permissions ▸Window functions ▸CTEs & recursion ▸pgvector & embeddings ▸RAG on Postgres ▸Replication & HA ▸postgresql.conf tuning ▸Transactions & MVCC ▸SELECT & WHERE ▸JOINs demystified ▸GROUP BY + HAVING ▸Indexes & EXPLAIN ▸VACUUM & autovacuum ▸pg_dump backups ▸Roles & permissions ▸Window functions ▸CTEs & recursion ▸pgvector & embeddings ▸RAG on Postgres ▸Replication & HA ▸postgresql.conf tuning ▸Transactions & MVCC

Learning tracks

Pick your path. All roads lead to Postgres.

SQL Foundations

Zero to confident queries. Every concept is paired with runnable SQL and safe experiments.

14 lessons Start →

🐘 Intermediate

Postgres DBA

The classic BlinkSQL operational material, rebuilt as guided labs and deeper article lessons.

18 lessons Start →

AI & Vectors

pgvector, embeddings and RAG workflows — a forward-looking track for AI-native database work.

11 lessons Start →

0 interactive lessons

0 learning tracks

0 runnable queries

0 in your browser

✦

AI tutor in every lesson

Ask for hints, error explanations, or query reviews without leaving the lesson flow.

⌁

English in, SQL out

Translate natural language into queries, then inspect how the SQL is built and why it works.

⛁

A real engine, zero setup

Every query runs locally in your browser, so experimentation is instant and safe.

🧭

AI-era curriculum

From classic PostgreSQL operations to vectors, embeddings, and RAG patterns.

Field notes from the blog

All posts →

Vi editor in Linux

Its a visual editor by default installed in every linux system. The next version of vi is vim.…

Nov 8, 2022 PostgreSQL

Install PostgreSQL

1. yum install postgresql-server postgresql-contrib 2. su postgresql 3. postgresql-setup initdb 4. vi /var/lib/pgsql/data/pg_hba.conf 5. Find the lines…

Feb 7, 2018 Uncategorized

Monitoring in Postgresql

In normal PostgreSQL operation, tuples that are deleted or obsoleted by an update are not physically removed from their table.…

Your first query is 30 seconds away.

No signup, no install. A real SQL engine is already running in this tab.

SELECT 'hello' — try it now