Testing website applications is an essential part of the development process, and SQL plays a critical role in ensuring that your application is functioning as intended. Novatesting has put together a comprehensive guide to help you master the art of testing website applications with SQL. In this article, we’ll walk you through 10 hands-on exercises that will help you to test various functionalities, including login, registration, data retrieval, update, deletion, search, sorting, grouping, aggregation, and validation.
- Testing Login functionality with SQL:
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-- Test login with correct credentials
SELECT * FROM users WHERE username = 'testuser' AND password = 'password';
-- Test login with incorrect credentials
SELECT * FROM users WHERE username = 'testuser' AND password = 'incorrectpassword';
2. Testing User Registration functionality with SQL:
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-- Insert a new user into the database
INSERT INTO users (username, email, password) VALUES ('newuser', '[email protected]', 'password');
-- Test if the new user was successfully inserted
SELECT * FROM users WHERE username = 'newuser';
3. Testing Data Retrieval functionality with SQL:
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-- Retrieve all data from a table
SELECT * FROM products;
-- Retrieve specific data from a table using a condition
SELECT * FROM products WHERE price < 50;
- Testing Data Update functionality with SQL:
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-- Update a record in the database
UPDATE products SET price = 60 WHERE id = 1;
-- Verify that the record was updated
SELECT * FROM products WHERE id = 1;
- Testing Data Deletion functionality with SQL:
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-- Delete a record from the database
DELETE FROM products WHERE id = 2;
-- Verify that the record was deleted
SELECT * FROM products WHERE id = 2;6. Testing Search functionality with SQL:
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-- Search for products with a specific keyword
SELECT * FROM products WHERE name LIKE '%keyword%';
7. Testing Sorting functionality with SQL:
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-- Sort products by price in ascending order
SELECT * FROM products ORDER BY price ASC;
-- Sort products by price in descending order
SELECT * FROM products ORDER BY price DESC;
8. Testing Grouping functionality with SQL:
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-- Group products by category
SELECT category, SUM(price) FROM products GROUP BY category;
9. Testing Data Aggregation functionality with SQL:
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-- Calculate the total number of products
SELECT COUNT(*) FROM products;
-- Calculate the average price of products
SELECT AVG(price) FROM products;
10. Testing Data Validation functionality with SQL:
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-- Test if an email already exists in the database
SELECT * FROM users WHERE email = '[email protected]';
-- Test if a username already exists in the database
SELECT * FROM users WHERE username = 'existingusername';
Note: The above SQL queries are just examples, the actual syntax and table/column names may vary depending on the database management system being used.