We can say that it combines NOT NULL and UNIQUE. FOREIGN KEY: Links records in two tables. How many questions can you answer in SQL Server Interview? Take a quick Quiz to check it out Take a Quiz 4. What is the difference between WHERE clause and Having clause? 5. Write a query ...
Question: Join the employees and departments tables. Return the employee name and department name for all employees. Answer: SELECT e.employee_name, d.department_name FROM employees e INNER JOIN departments d ON e.department_id = d.department_id; Explanation:An INNER JOIN is used to combine r...
For SQL interview questions that ask you to talk about the advantages or disadvantages of a certain component or tool, ensure that you list as many as you can. Also, you can make your answer to such an SQL interview question meaty by adding personal anecdotes about some of the advantages o...
The following are the most popular and useful SQL interview questions and answers for fresher and experienced candidates. These questions are created specifically to familiarise you with the types of questions you might encounter during your SQL interview. According to our experiences, good interviewers ...
Check out the Postgre Interview Questions to prepare for your next interview.14. What is a HASH JOIN? A HASH JOIN requires two inputs, an INNER table, and an OUTER table. HASH JOINS involve using a HASH table to identify matching rows between two tables. HASH JOINS are an option when ...
This article will discuss the top-most PL/SQL interview question and answers. Table of Contents: PL/SQL Interview Questions and Answers Conclusion Was this helpful? Recommended Reading PL/SQL Interview Questions and Answers Let’s start!!
Top Interviews Question and their answer with examples (Part 2) Here are some mentioned points. 1. What is your salary expectation? A nasty question, do not give the salary number to them exactly as every company have its own structure of salary. Telling your salary number may lead...
SQL在2021年的数据方向面试中目前大部分只存在于phone interview（电话面试）当中，在onsite interview（...
SQL Server Replication Interview Questions and Answers Question – Briefly define SQL Server Replication and its components. Answer –Replication is used to replicate data from one server to another. SQL Server replication has very mature features that can be used to offload reporting transactions from...
Frequently asked SQL Server Interview Questions and Answers for freshers, intermediate, and experienced which will definitely ace your SQL Server Interview.