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47 interview questionsfor developers (2026)

Test your developer skills before an interview with 47 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

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47 questions
Easy
55 votes3756 runs0 comment

Write a SQL query to retrieve the list of employees with a salary greater than 5100.

Back-end developer
sql
select
where
Anonymous authorat Mar 30, 2023
Easy
21 votes3719 runs0 comment

Write a SQL query to insert data into a table

Back-end developer
sql
insert
Anonymous authorat Mar 27, 2023
Easy
21 votes3705 runs0 comment

Select only distinct values in a column using SQL

Back-end developer
sql
distinct
Anonymous authorat Mar 27, 2023
Easy
19 votes3612 runs1 comment

Update a column in an SQL table

Back-end developer
sql
update
Anonymous authorat Nov 7, 2023
Easy
17 votes3681 runs0 comment

Which SQL keyword is used to sort the result of a SELECT statement?

Back-end developer
sql
order by
Anonymous authorat Mar 27, 2023
Medium
14 votes3649 runs4 comments

Write the SQL query to delete a column from a table

Back-end developer
sql
table
column
Anonymous authorat Mar 27, 2023
Easy
11 votes3616 runs0 comment

How to delete an SQL table?

Back-end developer
sql
tables
Anonymous authorat Mar 27, 2023
Easy
11 votes3506 runs0 comment

Write a SQL query to retrieve the products with a price less than 1000 and sort the results in descending order of price.

Back-end developer
sql
order by
descending
Anonymous authorat Mar 28, 2023
Easy
10 votes3598 runs0 comment

Count the number of rows in an SQL table

Back-end developer
sql
count
Anonymous authorat Mar 27, 2023
Easy
10 votes3507 runs
2 comments

Write a SQL query to increase the salary of all employees by 10%.

Back-end developer
sql
update
salary
Anonymous authorat Mar 28, 2023
Easy
9 votes3685 runs
5 comments

Write an INNER JOIN query in SQL

Back-end developer
sql
join
Anonymous authorat Mar 27, 2023
Medium
9 votes3065 runs2 comments

Write a SQL query to get the order_id and total number of items for each order.

Back-end developer
sql
join
group by
Anonymous authorat Jan 2, 2024
Easy
8 votes3430 runs0 comment

Write a SQL query to get the total order amount for each customer.

Back-end developer
sql
sum
group by
Anonymous authorat Mar 28, 2023
Easy
8 votes3189 runs1 comment

Write a SQL query to retrieve employees with a salary higher than the average salary.

Back-end developer
sql
average
select
Anonymous authorat Mar 28, 2023
Easy
6 votes3511 runs0 comment

Write a SQL query to calculate the total quantities sold for each product_id.

Back-end developer
sql
sum
group by
Anonymous authorat Mar 28, 2023
Easy
6 votes1118 runs0 comment

Write a SQL query to get the total sales quantity for each product.

Back-end developer
sql
sum
group by
JOHANat Jul 19, 2024
Easy
5 votes3626 runs
9 comments

Which SQL keyword is used to filter the results of a SELECT statement based on a specified condition?

Back-end developer
sql
select
where
Anonymous authorat Mar 27, 2023
Medium
4 votes1103 runs1 comment

Write the SQL code to create a table with a primary key

Back-end developer
sql
primary key
Anonymous authorat Nov 15, 2023
Easy
3 votes768 runs0 comment

Which SQL command allows you to define a constraint on the range of values of a column when creating a table?

Back-end developer
sql
constraints
Louis Prevosteauat May 15, 2023
Hard
3 votes690 runs0 comment

Write a SQL query to get the average of the number of orders per customer.

Data Scientist
sql
error
Clément Devosat Dec 2, 2021