SQL for Data Scientists, Data Engineers and Developers

“Lovely explanation, topics and sql challenges very well covered , 100% worth it.” Veerendra Shukla

“Very thorough overview and practice of SQL. Enough for basic tech interview of SQL.” Chih-En Ko

Welcome to the course, where you’ll master one of the most essential tools in the toolkit of data scientists and data engineers! The course is packed with interactive coding exercises and LeetCode challenges, allowing you to apply your skills to real-world problems. By the end of this course, you’ll be well-equipped to handle any SQL-related task in your professional journey.

Hi, I’m Chandra Lingam, and I’ll be your guide through this journey.

Data Transformation and Retrieval: SQL (Structured Query Language) is fundamental for querying and manipulating databases. Understanding how to efficiently retrieve and transform data is crucial for any data science role, as you often need to extract and prepare data before analysis or modeling.

Universal Usage: SQL is used across various databases and data management systems. Mastery of SQL makes you versatile and capable of working with different data storage systems, from traditional relational databases (e.g., MySQL, PostgreSQL) to more modern and complex systems used in big data environments (e.g., Spark, Hive, Presto).

Understanding Interview Essentials: SQL skills are commonly tested in data science interviews, especially for roles that involve data extraction, cleaning, and initial analysis. A strong foundation in SQL can help you stand out in technical interviews and practical tests.

Integration with Other Tools: SQL skills complement other data science tools and languages, such as Python and R. For instance, knowing how to use SQL alongside Python libraries like pandas for data manipulation can significantly enhance your efficiency and effectiveness in data analysis tasks.

Come on in and let’s get started!

HouseKeeping

1

Introduction

Video lesson

Why Do Databases Have So Many Tables?

Exploring Data Retrieval: Basics of SELECT and WHERE Clauses from a Single Table

LeetCode Programming Challenge: Problem Set 1

Data Transformation Using Built-in Functions and Conditional Logic

Mastering Joins: Combining Rows from Multiple Tables Based on Related Columns

LeetCode Programming Challenge: Problem Set 2

Exploring Subqueries: Nested Queries for Advanced Filtering

LeetCode Programming Challenge: Problem Set 3

Aggregation: Introduction to Data Analysis Techniques

Aggregation by Categories

How long do I have access to the course materials?

You can view and review the lecture materials indefinitely, like an on-demand channel.

Can I take my courses with me wherever I go?

Definitely! If you have an internet connection, courses on Udemy are available on any device at any time. If you don't have an internet connection, some instructors also let their students download course lectures. That's up to the instructor though, so make sure you get on their good side!

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