SQL Online Compiler - Free SQL Practice

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🎯 Quick Interactive SQL Tutorial Syllabus (Click to Run)

Click on any SQL subtopic below to automatically load its sample code into the compiler below and execute it immediately:

1. Basics & Sorting

SELECT * Aliases (AS) DISTINCT ORDER BY LIMIT / OFFSET

2. Filtering (WHERE)

WHERE (=, >) AND / OR / NOT BETWEEN IN / NOT IN LIKE (% _) IS NULL

3. Joins & Sets

INNER JOIN LEFT JOIN 3-Table JOIN SELF JOIN CROSS JOIN UNION

4. Grouping & Subqueries

COUNT / AVG / SUM GROUP BY HAVING Subquery EXISTS / IN WITH (CTE)

5. Functions & Logic

CASE WHEN COALESCE String Funcs Math & Date

6. Window, DDL & DML

RANK / DENSE_RANK Running Total INSERT / UPDATE CREATE TABLE / VIEW

⚡ DailyAspirants Online SQL Compiler

📚 Select SQL Tutorial / Subtopic (32 Lessons)... 1.1 SELECT * (View All Columns) 1.2 SELECT Specific Columns & Aliases (AS) 1.3 SELECT DISTINCT (Unique Values) 1.4 ORDER BY (ASC & DESC Sorting) 1.5 LIMIT & OFFSET (Top N & Pagination) 2.1 WHERE Comparison (=, !=, >, <, >=) 2.2 Logical Operators (AND, OR, NOT) 2.3 BETWEEN Operator (Range Check) 2.4 IN & NOT IN Operator (List Match) 2.5 LIKE Wildcards (% and _ Patterns) 2.6 IS NULL & IS NOT NULL 3.1 COUNT, SUM, AVG, MIN, MAX 3.2 GROUP BY Clause 3.3 HAVING Clause (Filter Groups) 4.1 INNER JOIN (Matching Records) 4.2 LEFT OUTER JOIN (All Left + Match) 4.3 3-Table JOIN (Customers + Orders + Products) 4.4 SELF JOIN (Employees & Managers) 4.5 CROSS JOIN (Cartesian Product) 5.1 UNION (Unique Combined Rows) 5.2 UNION ALL & INTERSECT 6.1 Scalar Subquery (Above Avg Salary) 6.2 Subquery with IN & EXISTS 6.3 CTE - Common Table Expression (WITH) 7.1 CASE WHEN...THEN...ELSE Logic 7.2 COALESCE & IFNULL Functions 7.3 String Functions (UPPER, LOWER, LENGTH, SUBSTR) 7.4 Date & Math Functions (ROUND, ABS, STRFTIME) 8.1 ROW_NUMBER, RANK, DENSE_RANK 8.2 Partition By & Running Totals 9.1 INSERT, UPDATE, and DELETE Rows 9.2 CREATE TABLE, ALTER & VIEW

📁 Database Schema (5 Tables) ▼ Show / Hide

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Welcome Select any topic from the syllabus above or dropdown to load live SQL examples!

✍️ SQL Query Editor Shortcut: Ctrl + Enter

-- Welcome to DailyAspirants SQL Practice Lab! -- Choose any of the 32+ tutorials above or write your own SQL query below: SELECT e.emp_id, e.emp_name, e.role, d.dept_name, e.salary FROM Employees e INNER JOIN Departments d ON e.dept_id = d.dept_id WHERE e.salary >= 45000 ORDER BY e.salary DESC;

📊 Query Result Table Ready

⏳ Initializing SQL database engine...