SQL tips, tutorials, and insights from the SQLExplain.ai team.
Build a production-grade PostgreSQL schema for a multi-vendor e-commerce marketplace like Amazon, Etsy, or eBay — covering users, stores, products, variants, carts, orders, payments, reviews, and addresses with full DDL and example queries.
Design a PostgreSQL schema for a project management tool like Jira or Asana — covering workspaces, projects, sprints, tasks, subtasks, labels, comments, attachments, and activity history.
Design a production-grade PostgreSQL schema for a healthcare appointment platform — covering patient records, provider availability, medical history, prescriptions, insurance, and billing.
Design a complete PostgreSQL schema for a real estate listings platform like Zillow or Rightmove — covering agents, agencies, property listings, amenities, enquiries, viewings, offers, and transactions, with seven production-ready SQL queries.
Build a production-grade PostgreSQL schema for a social media app like Twitter or Instagram — covering users, posts, comments, likes, follows, messaging, hashtags, and notifications with full DDL and example queries.
Build a production-grade PostgreSQL schema for a fitness tracking app like Strava or Fitbod — covering workouts, exercise sets, training plans, body measurements, goals, and a social follow graph.
Design a production-grade PostgreSQL schema for a hotel booking platform like Booking.com — covering room types, seasonal pricing, availability checks, cancellations, multi-category reviews, and revenue reporting.
Build a production-grade PostgreSQL schema for an online learning platform like Udemy or Coursera — covering courses, lessons, progress tracking, quizzes, assignments, certificates, and instructor revenue.
Build a production-ready PostgreSQL schema for a food delivery app — covering restaurants, menus, orders, driver profiles, payments, and reviews with full DDL and example queries.
Walk through a production-ready PostgreSQL schema for an event ticketing platform — covering events, venues, ticket types, payments, check-in, and reviews with full DDL and example queries.
Learn the fundamentals of SQL and how to write your first queries with SQLExplain.ai