Comprehensive, community-driven list of essential SQL interview questions. Whether you're a candidate or interviewer, these interview questions will help prepare you for your next SQL interview ahead of time.
SQL knowledge is essential for the majority of services. There are a lot of important questions for which the candidates need to be prepared while going for an interview. TheSQL Interview Questionsare very important for getting a job. One must answer the SQL Interview Questions to qualify for ...
This is the widely used join for queries. SELECT * FROM Table_A JOIN Table_B; SELECT * FROM Table_A INNER JOIN Table_B; LEFT (OUTER) JOIN: Retrieves all the records/rows from the left and the matched records/rows from the right table. SELECT * FROM Table_A A LEFT JOIN Table_B ...
Free Practice Test Instructions: FREE test and can be attempted multiple times. 60 Minutes 30 Multiple Choice Questions Fill in the Details to Get Started +91 IN INDIA+44 UK UNITED KINGDOM+1 US UNITED STATES+1 CA CANADA--- -- ---+376 AD ANDORRA+971 AE UNITED ARAB EMIRATES+93 AF AFGH...
5.Basic SQL Practice: Run Track Through Queries! ★★★(817)119Coding challengesBasic Do you like both sports competition and learning? We have something for you. Here are 119 interactive online SQL exercises to help you practice your skills. Challenge yourself, solve problems, and win the rac...
or combination of tables. Users can write and execute queries to retrieve, delete or update information in a database. Usually, a query response returns data from different tables within the database, but this does not apply every time (for example, a delete query will not return anything)....
w3resource — This is a great free resource for writing queries. The SQL Murder Mystery — This is another one of my favorites thanks to its fun, interactive environment that has you feeling like a top secret agent. Interview Query — This platform is dedicated to helping data scientists pra...
Or “List the different types of JOINs!” That’s a stupid type of SQL tech assessment — as it focuses on theory and not on practice. Still, some companies… you know. Take-home SQL assignment. You get a more complex task and you’ll have to write multiple SQL queries to solve it...
Performance Tuning Tips: Explore best practices for optimizing SQL query performance. Regular Expressions in SQL: Learn how to use regular expressions for pattern matching within SQL queries. Exercises, Interview Questions & Cheat Sheet Hands-On Practice Strengthen your SQL skills with practical exercises...
If you to learn and practice more for your interview, check out theseSQL courses. FAQs How can I structure personal experience questions for the SQL Server interview questions? It’s always a good idea to quantify the impact of your project and work experience. If you have relevant experience...