SQL Interview Preparation

The ultimate guide to SQL interviews. Practice with real-world interview questions developed by FAANG engineers. Prep faster with CRUD queries, SQL functions, and challenging joins/subqueries. Get interview-ready in hours.

Beginner

52 Lessons

Certificate of Completion

AI-POWERED

Mock Interview

Explanations

AI-POWERED

Mock Interview

Explanations

This course includes

161 Playgrounds

36 Quizzes

This course includes

161 Playgrounds

36 Quizzes

Course Overview

This course will help you prepare for your next SQL coding interview. Various problem statements have been provided to evaluate your knowledge and learn to write perfect queries quickly. The course starts with interview questions on basic CRUD queries. Afterward, interview questions involving different SQL functions, including aggregate and date and time functions, are posed. Then, questions related to data grouping and sorting are presented. Toward the end of the course, more challenging questions related...Show More

TAKEAWAY SKILLS

Sql

Database

Prepare For Interview

Problem Solving

What You'll Learn

An understanding of interview questions regarding SQL

Hands-on exercises to practice your skills

The ability to solve coding problems with different techniques

Familiarity with different SQL functions

A working knowledge of combining SQL queries

What You'll Learn

An understanding of interview questions regarding SQL

Course Content

Get Started

Get familiar with SQL interview questions and hone query writing skills through exercises.

Introduction

CRUD Operations

Unpack the core of inserting, updating, and deleting records in SQL.

Question: Insert a Record

Answer: Insert a Record Question: Update a Value Answer: Update a Value Question: Delete a Record Answer: Delete a Record

Aggregate Functions

Examine SQL aggregate functions for summing, averaging, finding minimum/maximum values, and counting records.

Question: Aggregate Records Using SUM Answer: Aggregate Records Using SUM Question: Aggregate Records Using AVG Answer: Aggregate Records Using AVG Question: Aggregate Records Using MIN/MAX Answer: Aggregate Records Using MIN/MAX Question: Aggregate Records Using COUNT Answer: Aggregate Records Using COUNT

Date and Time Functions

Grasp the fundamentals of extracting, formatting, and calculating date and time values in SQL.

Question: Extract a Value From a Date Answer: Extract a Value From a Date Question: The DATE Column and Calculations Answer: The DATE Column and Calculations

Filtering

Solve problems in filtering SQL records using WHERE and LIKE clauses effectively.

Question: Filter with the WHERE Clause Answer: Filter with the WHERE Clause Question: Filter with the LIKE Operator Answer: Filter with the LIKE Operator

Grouping

4 Lessons

Follow the process of grouping data using SQL GROUP BY with aggregate functions.

Sorting

4 Lessons

Practice using SQL sorting commands, filtering, aggregation, and handling NULL values.

Constraints

8 Lessons

Step through SQL constraints, ensuring data integrity with NOT NULL, UNIQUE, PRIMARY, and FOREIGN KEY constraints.

Working with JOINs

8 Lessons

Get started with mastering SQL JOIN operations to combine and retrieve data across multiple tables.

10.

Subquery

4 Lessons

Break apart essential subquery techniques and calculations for effective SQL querying.

11.

Final Remarks

1 Lesson

Grasp the fundamentals of SQL interviews, key topics, and advanced database concepts.

Trusted by 1.4 million developers working at companies

Anthony Walker

@_webarchitect_

Emma Bostian 🐞

@EmmaBostian

Evan Dunbar

ML Engineer

Carlos Matias La Borde

Software Developer

Souvik Kundu

Front-end Developer

Vinay Krishnaiah

Software Developer

Eric Downs

Musician/Entrepeneur

Kenan Eyvazov

DevOps Engineer

Anthony Walker

@_webarchitect_

Emma Bostian 🐞

@EmmaBostian

Hands-on Learning Powered by AI

See how Educative uses AI to make your learning more immersive than ever before.

Instant Code Feedback

Evaluate and debug your code with the click of a button. Get real-time feedback on test cases, including time and space complexity of your solutions.

AI-Powered Mock Interviews

Put your skills to the test in a simulated interview setting. Receive personalized feedback based on your performance. Available in Premium & Premium Plus plans.

Adaptive Learning

At various checkpoints throughout Educative courses, you will be prompted to take a quick assessment. Receive a condensed curriculum tailored to your strengths and skill gaps.

Explain with AI

Select any text within any Educative course, and get an instant explanation — without ever leaving your browser.

AI Code Mentor

AI Code Mentor helps you quickly identify errors in your code, learn from your mistakes, and nudge you in the right direction — just like a 1:1 tutor!