Common SQL Interview Questions for Freshers

By Team foundit

June 6, 2024

SQL Interview Prep

Ace your SQL interviews with these common questions for freshers. Learn key concepts and tips to impress your interviewer.

Basic SQL Questions

What is SQL? Explain its uses. Discuss the difference between SQL and MySQL.

SQL Fundamentals

What are the different types of SQL commands (DML & DDL)?

Tables & Fields

Explain the difference between tables and fields in a database.

Keys

What is a primary key, and why is it important?

Data Types

What are some common data types used in SQL? Explain common types like INT, VARCHAR, DATE, and BOOLEAN.

Joins in SQL

Explain different types of joins in SQL. Discuss INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN with examples.

Filters

How do you filter data in SQL using the WHERE clause?

Functions

What are some examples of common SQL functions? Explain COUNT, SUM, AVG, MIN, MAX, and how they help in data analysis.

Practical Tips

Practice writing SQL queries regularly. Use online resources and databases to test your skills. Mock interviews can help you gain confidence.

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