SQL INTERVIEW QUESTIONS
SQL Interview Questions and Answers (Part-III)
86. What is a Primary Key in SQL? Answer: A Primary Key is a constraint that uniquely identifies each record in a table. Features: Example: sql CREATE TABLE ...
SQL Interview Questions and Answers (Level-3)
71. Write a query to calculate publication and cancellation rate for each user from a table with user IDs, actions, and dates. Answer: To calculate publication and cancellation ...
SQL Interview Questions and Answers (Part-II)
🔹 56. Find Employees Earning More Than Their Managers Question: Write a SQL query to list employees who earn more than their managers. Answer: sql SELECT e1.Name AS ...
SQL Interview Questions and Answers (Level-2)
36. What is an SQL View? Answer: An SQL View is a virtual table based on the result of a SQL query. It doesn’t store actual data but ...
SQL Interview Questions and Answers (Part-I)
21. How to select UNIQUE records from a table in SQL? Answer: Use the DISTINCT keyword or GROUP BY clause. Example using DISTINCT: sql SELECT DISTINCT Department FROM ...
SQL Interview Questions and Answers (Level-1)
1. What is SQL? Answer: SQL stands for Structured Query Language, a standard programming language used for managing and manipulating relational databases. It is widely used in data-driven ...
