SQL Recipes vs SQL Guide

200+ SQL queries with explanations, 120+ of them free. Tap Run and see the result table right in the app. An everyday SQL cheat sheet, from your first SELECT to window functions. • 39 sections, including filtering, sorting, calculated fields, functions, GROUP BY, window functions, subqueries, JOIN, UNION, INSERT and UPDATE, data types, tables, views. • Changes by standard: 7 sections from SQL-92 to SQL:2023, with before-and-after queries. • Keyword and function reference: over 180 articles. Browse, search, or tap a word in a query to open its article. • Dialects compared: MySQL, PostgreSQL, SQLite, SQL Server, Oracle, Firebird, Access. Where they differ, the dialect-specific variants are shown. • Practice database: the classic MySQL “world” sample (countries, cities, spoken languages); its tables are described in the app. • Run in the app: more than half of the queries execute against the practice database, and the result table appears directly below the query. Requires an internet connection. • Search covers the queries themselves, not just titles: type a fragment you remember and find the query. • Edit queries and rerun the runnable ones; one tap brings the original back. • Add your own queries; they are saved in the app. • Everything except running queries works offline. No account needed. Queries are curated from professional sources and checked before release: the code works and is easy to follow. FREE VERSION • 12 runs and 12 edits a day • Full keyword and function reference; tap a word in a query for up to 12 articles a day • Up to 5 queries of your own The full version unlocks every query, removes the limits on edits and on your own queries, and raises the daily run limit to 80. One-time purchase, no subscription. Built by a developer for developers. The CodePro project has been in active development since 2015.

SQLGuide — Learn SQL, One Chapter at a Time SQLGuide is a modern, lightweight SQL learning app built around short chapters, interactive quizzes, and a practical reference library. It is designed for beginners who want to learn core SQL concepts clearly and build confidence with real query patterns. Learn by doing SQLGuide combines guided reading with quick practice so you can move from understanding → recall → application: - Read a chapter with focused explanations and examples - Practice with multiple quiz formats - Keep a reference library for fast lookups - Bookmark what matters and come back later Guide (SQL Basics) Progress through a structured curriculum that starts from fundamentals and builds up step by step: - Queries: SELECT, DISTINCT, LIMIT - Filtering: WHERE, AND/OR, IN, BETWEEN, LIKE - Sorting and grouping: ORDER BY, GROUP BY, HAVING - Aggregation: COUNT, SUM, AVG, MIN, MAX - Joins: INNER/LEFT/RIGHT, practical join patterns - Data shaping: CASE, COALESCE, NULL handling - Subqueries, CTEs, UNION - Basic DDL/DML concepts: CREATE TABLE, INSERT, UPDATE, DELETE (concepts and patterns) Quiz (with explanations) Practice with short, focused prompts that reinforce both syntax and reasoning: - Clear explanations after each question to help you learn from mistakes - SQL snippets and realistic scenarios that mirror everyday query work - Smooth “continue” flow to keep you moving without friction - Progress tracking that shows what you have mastered and what is next Reference (quick SQL lookup) A curated reference list for frequently used SQL topics, with concise notes and examples to reduce context switching while you learn. Bookmarks and progress - Bookmark chapters and reference topics - Track course progress and quiz completion - Earn badges as you complete milestones Who this is for - Students learning SQL fundamentals - Developers refreshing core SQL skills - Analysts practicing queries and concepts - Anyone preparing for SQL interviews or assessments Privacy and access No account required. No login. No external sign-in at all. Everything is free. Download and get all content immediately.