SQL Interview Questions for Freshers 1. What is the difference between a primary key and a unique key? Primary Key: The primary key is used to identify every record in a table uniquely. It ensures that NULL values are not present in the table. Unique Key: The unique key also identifies...
SQL Interview Questions for Freshers 1. What is the difference between a primary key and a unique key? Primary Key: The primary key is used to identify every record in a table uniquely. It ensures that NULL values are not present in the table. Unique Key: The unique key also identifies...
Prepare for your SQL interview with these top SQL joins interview questions and answers. Get ready to ace your interview and showcase knowledge of SQL joins.
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Intermediate SQL interview questions with detailed answers: 11. 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 ...
Basic & Advanced SQL Server Interview Questions And Answers Let’s start with common SQL Interview Questions first. 1. What is a Database? A database is a collection of information in an organized form for faster and better access, storage, and manipulation. It can also be defined as a co...
Name anyone or two projects or activities for which you have been recognized by your client and leaders? The questions given above are just an example of generic questions being asked in most of the interviews. You must prepare based on your experience. One simple rule will always work, to ...
SQL Server Interview Questions What is SQLOS? SQLOS stands for SQL Server Operating System. SQLOS is the lowest layer of SQL Server Database Engine which is responsible to perform critical internal tasks like scheduling threads on CPU to execute SQL Serve transactions, memory management, deadlock...
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. ...
If you to learn and practice more for your interview, check out these SQL 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 experienc...