12.1 - Why SQL Matters in QA
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What SQL command is used to retrieve data?
💡 Hint: Think about what command helps you see data.
What does the WHERE clause do?
💡 Hint: It narrows down the selection of data.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What command would you use to retrieve records from a SQL database?
💡 Hint: This is the first step to getting information from a database.
True or False: The WHERE clause can filter records based on specified conditions.
💡 Hint: Think about how you narrow down results in a query.
1 more question available
Challenge Problems
Push your limits with advanced challenges
You need to ensure that all users with the same email in the database are unique. Write an SQL query to find duplicates based on email.
💡 Hint: You are looking to count entries grouped by email.
Write a test case scenario using SQL to validate that the total amount in orders matches the sum of items for multiple orders.
💡 Hint: Think about how you can aggregate item prices grouped by orders.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.