Certification Program
SQL Certified Developer
About this certification
Prove you can write real SQL queries used by working data analysts and developers. This certification covers SELECT, JOIN, aggregation, subqueries and more.
Sample Questions
A preview of what the exam looks like, the full exam has 60 questions in total.
1
Which SQL clause is used to filter rows before grouping?
WHERE
HAVING
2
Which statement returns only the names of employees earning more than 5000, highest salary first?
SELECT name FROM employees HAVING salary > 5000 ORDER BY salary DESC;
SELECT name FROM employees WHERE salary > 5000 ORDER BY salary DESC;
SELECT name FROM employees WHERE salary > 5000 SORT BY salary DESC;
SELECT name WHERE salary > 5000 FROM employees ORDER BY salary DESC;
3
Which join returns all rows from the left table plus the matching rows from the right table, with NULLs where there is no match?
LEFT JOIN
INNER JOIN
CROSS JOIN
RIGHT JOIN
4
Which clause filters groups after aggregation?
WHERE
GROUP FILTER
HAVING
ORDER BY
5
Which expression correctly finds rows where manager_id has no value?
WHERE manager_id IS NULL
WHERE manager_id = NULL
WHERE manager_id == NULL
WHERE manager_id = ''
Rs 2,000
Questions60
Pass mark70%
Time limitNone
CertificateInstant on pass
Secure PaymentInstant Certificate