DevSkiller prepares MySQL interview questions for recruiters who are looking to hire the best MySQL developers for their business. Our specialist IT experts design MySQL interview questions catered specifically to help with screening MySQL developers at junior, middle, and senior-level.
valutare la conoscenza di Matematica, Probabilità, Competenze trasversali, SQL
valutare la conoscenza di MySQL, SQL
SQL | MySQL | Software House | Devs and their projects - The Head of the development team assigned you a task to create a list of developers with their role in the ongoing projects.
valutare la conoscenza di Pensiero logico, Matematica, MySQL, SQL
valutare la conoscenza di SQL
SQL | MySQL | Stamps catalogue | AVG Function - Select the stamps (name and price) with price greater than or equal to the total average price.
valutare la conoscenza di Pensiero logico, SQL, MySQL
valutare la conoscenza di MySQL, SQL
SQL | MySQL | Stamps catalogue | A Self JOIN - Select stamps (name and location) that are in the same location.
valutare la conoscenza di Pensiero logico, SQL
SQL | PostgreSQL | Hotels - cities and top hotels - Prepare a list of cities with the date of last reservation and a main photo (photos[0]) of the most popular (by number of bookings) hotel in this city.
SQL | Catalogo francobolli | I tre prezzi più alti - Seleziona i tre francobolli (prezzo e nome) con il prezzo più alto.
Python | Pandas | Parser di tabelle HTML - Implementa una funzione per convertire una tabella HTML in un file in formato CSV.
valutare la conoscenza di DevOps, Docker
DevOps | Master of Disaster Recovery (CentOS) - Recover data from broken MariaDB/MySQL database.
valutare la conoscenza di DevOps, Docker
DevOps | Master of Disaster Recovery (Ubuntu) - Recover data from broken MariaDB/MySQL database.
valutare la conoscenza di SQL
valutare la conoscenza di SQL
SQL | PostgreSQL | Hotels - hotels page optimization - Improve the performance of the the hotels listing page which currently uses ORM.
valutare la conoscenza di SQL, MongoDB, NoSQL
valutare la conoscenza di MongoDB
SQL | Customer Data - Find all the customers whose first and last names are not unique in this database, as well as the number of times each first and last name pair appears in the database.
valutare la conoscenza di SQL, MongoDB, NoSQL
valutare la conoscenza di MongoDB
SQL | Fill sparse table - Write a query that will return the list of all users with the creation date and return the date from the previous not-null row for the entries affected with the bug.
valutare la conoscenza di SQL, MongoDB, NoSQL
valutare la conoscenza di MongoDB, SQL
SQL | Stamps catalogue | CASE statement - Make a select statement, by which you will divide your stamps collection into 3 groups.
valutare la conoscenza di SQL
Python | Analizzatore di DNA - Implementa un metodo in Python che genera rapporti statistici sul DNA.
valutare la conoscenza di SQL, MySQL
SQL | Customer Data - Find all the customers whose first and last names are not unique in this database, as well as the number of times each first and last name pair appears in the database.
valutare la conoscenza di SQL
SQL | Fill sparse table - Write a query that will return the list of all users with the creation date and return the date from the previous not-null row for the entries affected with the bug.
valutare la conoscenza di SQL
SQL | Books | find books without ratings - Select all title of the books which have no rating.
valutare la conoscenza di SQL
PostreSQL - Rewards Program - Write a query which will find the top 3 ranked customers according to the revenue they created with all of their orders
valutare la conoscenza di SQL, MySQL
SQL | Music Store | Count function - Write a query which will use the count function. This task can be solved in both MySQL && HSQLDB
valutare la conoscenza di SQL
Oracle - Rewards Program - Write a query which will find the top 3 ranked customers according to the revenue they created with all of their orders
valutare la conoscenza di SQL, MySQL
MySQL - Online Store - select clients with specified orders - Write the query which will select clients with specified orders
valutare la conoscenza di SQL
MSSQL - Rewards Program - Write a query which will find the top 3 ranked customers according to the revenue they created with all of their orders
valutare la conoscenza di SQL
SQL | Music Store | Time function - Write a query which will calculate the duration of all songs in each cd.
The candidate will be asked to solve two simple SQL queries related to a database with books and reviews data.
DevSkiller uses RealLifeTestingTM to offer a unique approach to developer recruitment. This one-of-a-kind testing methodology uses a simulated reality in order to challenge developers with realistic tasks and offer a detailed insight into how well they perform. Quicken up your recruitment process with DevSkiller’s MySQL interview questions.
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SQL developer interview questions and tests
DevSkiller MySQL interview questions are powered by the RealLifeTestingTM methodology. RealLifeTestingTM is based on the idea that to accurately assess a developer’s skills, you need to present them with challenges similar to the development work they actually do. Seems obvious right? Up until now, developer testing has focused on challenging developers by asking them to recite coding patterns and algorithms that they don’t use in their everyday work. Understandably this can be frustrating for developer candidates who don’t feel like they are given the chance to really demonstrate what they can do. Devskiller MySQL interview questions are changing this. We offer recruiters an opportunity to see how each candidate copes with realistic challenges that reflect their actual work environment. Candidates are assessed on their coding ability, their time-management, and their quick-thinking skills.
If you are hiring a MySQL developer you will need to know which special skills to look out for. SQL is a very popular Fourth Generation Programming Language (4GL). It is often also embedded in more general-purpose programming languages like Java, in order to access data from central databases.
The vast majority of MySQL performance-related issues can be solved by proper indexing, so it is vital your developer be skilled in this area. Understanding where use of an index will be beneficial is essential for any good MySQL developer.
SQL has evolved a lot during the past decades so you will need someone who is up to date. Various features have been implemented to make the SQL language easier to manage. Set theory is important as it allows developers to perform bulk operations on entire data sets, directly in the database. You will want your developer to know about this. An understanding of window functions and CTE will also be helpful.
Want to get more out of MySQL interview questions? The DevSkiller task wizard allows you to customize your MySQL interview questions and tailor them exactly how you like. If you want to change the language being tested, the length of each test, or even the allotted time given for each individual question, then this is all possible. There are loads of great features available to properly customize MySQL interview questions and suit them to complement your business.
Knowing where to assign the finances of your company most effectively can be a big responsibility. It is understandable to want to have a little assurance. Here is what our past customers have had to say:
“We now have a tool which allows us to not only collaborate to create tests assessing technical skills we need to grow, but also to communicate internally and externally (with candidates). What is more, our technical recruitment process is now more structured. As an example, we use our technical screening results as a conversation starter during technical interviews.”
“DevSkiller is easy to use and friendly.”
“Using DevSkiller to grade tests is 2 times more cost-efficient while giving our students a much better test and preparing them for future recruitment tests.”
RealLifeTestingTM is an opportunity to take recruitment screening to the next level. It is an advanced testing methodology that recreates a simulated version of a developer’s work environment and it forms the basis of all DevSkiller MySQL interview questions.
RealLifeTestingTM offers recruiters in-depth insight into a developer’s MySQL skills, one that is unattainable from traditional testing methods. It allows the accuracy of developer testing to be increased, without increasing the time needed for testing.
DevSkiller MySQL interview questions require candidates to build full project apps, add features to existing apps, and write code, just like they will be required to within the role. Candidates need to show their knowledge of resources like Stack Overflow, demonstrate their coding skills, and implement problem-solving solutions.
Devskiller testing is designed to make your recruitment process as simple as possible, which means we have automated our evaluation process to give you less to do. Once a candidate is finished with their test, the DevSkiller platform automatically gets to work on the results. Candidates are evaluated on the solutions they offer to problems, the amount of errors in their code, and the quality of the code. Results are formulated into an easy to understand report that even non-technical recruiters will be able to easily understand.
The benefit of DevSkiller MySQL interview questions is that they can be accessed remotely and taken from anywhere in the world. This saves hours of time spent on in-house testing.
Candidates receive test invites via email and can start their assessments at a time convenient to them. If they like, the recruiter can observe tests being taken in real-time.
For the tests themselves, candidates have the option to use DevSkiller’s state of the art in-browser IDE. If they prefer they can use their favorite IDE and clone the project to GIT.
Throughout the tests candidates can also run unit tests to make sure their solutions work the way they are intended to.
