1. Correlated:In a SQL database query, a correlated subquery is a subquery that uses values from the outer query in order to complete. Because a correlated subquery requires the outer query to be executed first, the correlated subquery must run once for every row in the outer query. It is...
This post will undoubtedly give you some insights if you’re looking for questions and answers to use while you prepare for a SQL interview. In a job interview for a data engineer, data analyst,database administrator, etc., the following questions should be expected. What are the basic SQL ...
During the technical interview, we can face some query reading questions to understand our SQL query reading capabilities. For this reason, we need to make some SQL practice to improve our query reading skills. For example, the following question, which seems very simple but contains a bit of...
Hello friends, in this SQL hands-on tutorial, you’ll find 50 tricky SQL queries for practice with their answers. Practicing tricky SQL queries is like sharpening your tools for working with data. SQL skills matter because they help you handle and understand information in databases, something t...
20.Select all records from Employee table where name not in ‘Amit’ and ‘Pradnya’ Answer: select * from Employee where name Not in (‘Amit’,’Pradnya’); Click Here to get 20 Interview Questions for Tech Mahindra…. 21.how to write sql query for the below scenario ...
Intermediate SQL interview questions with detailed answers: 1. Find Customer Order Counts Question: Write a query to list customers who have placed more than 5 orders. Use the customers and orders tables. Answer: SELECT c.customer_id, c.customer_name, COUNT(o.order_id) AS order_count ...
SQL Questions & AnswersSQL Server Express, Encrypting Data, and MoreEdited by Nancy MichellDatabase Sizer ToolsQ Where can I find a database sizer tool that can be used for large SQL Server™ databases?A You should start with the Scalability and Very Large Database Resource Web site . The...
Frequently Asked SQL Interview Questions 1. What is a Database? Adatabase refers to a structured data collection that can be stored, managed, and retrieved from a remote or local computer system. Databases can become pretty complex and are built with a fixed design and modeling approach. ...
Here are the top 50 SQL Server interview questions and their answers with detailed explanations with SQL query examples. In addition, this questions and answers guide helps answer questions related to database design, query optimization, and security. By the end of this article, you will have a...
Here, we have curated a list of SQL interview questions and answers segregated into basic, intermediate and advanced. Depending on the level of experience, candidates can get a different mix of basic and advanced SQL interview questions. For hiring managers as well, these questions can serve as...