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30 Daily Lessons
Structured lessons from basic SELECT statements to advanced JOINs and Indexing.
In-Browser SQL IDE
Write, run, and practice real SQL queries directly in your browser without any setup.
Syntax Guide
A quick reference for essential MySQL commands, data types, and functions.
SQL AI Tutor
Stuck on a query? Ask the AI Tutor for explanations, error checking, and tips!
💻 Browser SQL IDE
Write and execute real SQL queries directly in your browser. Powered by WebAssembly.
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📖 Syntax Guide
Quick reference for essential MySQL commands and structure.
SELECT
SELECT column1, column2 FROM table_name;
INSERT INTO
INSERT INTO table_name (column1, column2) VALUES (value1, value2);
UPDATE
UPDATE table_name SET column1 = value1 WHERE condition;
DELETE
DELETE FROM table_name WHERE condition;
WHERE & Operators
SELECT * FROM table_name WHERE age > 25 AND status = 'active';
ORDER BY
SELECT * FROM table_name ORDER BY column1 ASC, column2 DESC;
GROUP BY & HAVING
SELECT COUNT(id), country FROM customers GROUP BY country HAVING COUNT(id) > 5;
JOINS (Inner, Left, Right)
SELECT a.col, b.col FROM table_A a INNER JOIN table_B b ON a.id = b.id;
CREATE TABLE
CREATE TABLE users (id INT PRIMARY KEY AUTO_INCREMENT, name VARCHAR(100) NOT NULL);
ALTER TABLE
ALTER TABLE table_name ADD column_name datatype;