✦ AI-powered SQL sandbox

SQL |

Explore your schema visually and understand how tables relate.

See features

Features

Everything you need to master SQL

Four tools, one platform. Explore, execute, explain, and become an expert — all in your browser.

SQL EXPLORE

Visualise your schema

See your entire database structure at a glance. Navigate tables, columns, and relationships visually.

  • Interactive schema diagram
  • Foreign key mapping
  • Column types & constraints

SQL EXECUTE

Run queries safely

Write and execute SQL in a sandboxed PostgreSQL environment. Experiment freely.

  • A.I powered SQL editor
  • Real-time results table
  • Isolated sandbox environment

SQL EXPLAIN

AI that speaks SQL

Meet Lex, your AI SQL tutor. Ask about query errors, logic, or concepts — and get clear, context-aware answers instantly.

  • Contextual AI explanations
  • Query error diagnosis
  • Optimisation suggestions

SQL EXPERT

Become a professional

Follow structured lessons built on real-world datasets. Progress from basic SELECT to complex JOINs and window functions.

  • Guided SQL curriculum
  • Real-world datasets
  • Progressive challenges

How it works

Up and running in minutes

01

Sign up for free

Create your account in seconds. No credit card required to get started.

02

Choose a schema

Pick from real-world databases — e-commerce, social media, HR, and more.

03

Learn by doing

Write queries, ask Lex for help, and build genuine SQL skills hands-on.

Master SQL today

Join developers and data analysts levelling up their SQL skills with SQLExplain.