Course

Filtering and Sorting Data in SQL

In this course, you’ll learn more advanced querying, filtering, and analysis techniques using SQL.

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Part of the SQL, and Business Analyst (Power BI) paths.

4.8 (359 reviews)

11,178 learners enrolled in this course.

Beginner friendly
4 hours
Self paced
7 lessons

“I tried to use Codecademy and DataCamp but felt that their learning modules were not interactive enough to keep me engaged.”

Sunishchal Dev

Lead Data Scientist @Booster

Filtering and Sorting Data in SQL

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Course overview

In this course, you’ll learn how to identify and work with the various data types you’ll encounter in any data science role. Next, you’ll explore new concepts like functions, operators, expressions, and control flow. Finally, you’ll learn how to use them to optimize your work in a database.

Best of all, you’ll learn by doing — you’ll practice and get feedback directly in the browser.

Key skills

Defining binary operations and functions
Defining data types
Filtering results based on logical constraints
Ordering results

Course outline

Filtering and Sorting Data in SQL [7 lessons]

Datatypes and Column Operations 1h

Lesson Objectives

Identify different data types
Employ documentation
Execute operations between columns
Employ text operations
Define aliases

Functions 1h

Lesson Objectives

Define functions
Employ nested functions
Resolve missing values

Filtering I — Logical Operators 1h

Lesson Objectives

Define expressions
Define conditions
Filter based on conditions with `WHERE`
Employ logical operators `NOT`, `AND`, and `OR`

Filtering II — Complex Expressions 1h

Lesson Objectives

Define comparison operators
Identify the order of execution
Employ the `BETWEEN` operator

Filtering III — Special Comparison Operators 1h

Lesson Objectives

Employ `LIKE` operator
Filter based on patterns
Avoid multiple uses of `OR` with `IN`
Define `NULL`
Check if an expression is `NULL`

Control Flow 1h

Lesson Objectives

Program if/then rules
Employ the `CASE` expression
Identify pitfalls of the `CASE` expression

Ordering Results 1h

Lesson Objectives

Order results

The Dataquest guarantee

Dataquest has helped thousands of people start new careers in data. If you put in the work and follow our path, you’ll master data skills and grow your career.

We believe so strongly in our paths that we offer a full satisfaction guarantee. If you complete a career path on Dataquest and aren’t satisfied with your outcome, we’ll give you a refund.

Master skills faster with Dataquest

Go from zero to job-ready

Learn exactly what you need to achieve your goal. Don’t waste time on unrelated lessons.

Build your project portfolio

Build confidence with our in-depth projects, and show off your data skills.

Challenge yourself with exercises

Work with real data from day one with interactive lessons and hands-on exercises.

Showcase your path certification

Share the evidence of your hard work with your network and potential employers.

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4.85

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$30k

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Aaron Melton

Business Analyst at Aditi Consulting

“Dataquest starts at the most basic level, so a beginner can understand the concepts. I tried learning to code before, using Codecademy and Coursera. I struggled because I had no background in coding, and I was spending a lot of time Googling. Dataquest helped me actually learn.”

Jessica Ko

Machine Learning Engineer at Twitter

“I liked the interactive environment on Dataquest. The material was clear and well organized. I spent more time practicing then watching videos and it made me want to keep learning.”

Victoria E. Guzik

Associate Data Scientist at Callisto Media

“I really love learning on Dataquest. I looked into a couple of other options and I found that they were much too handhold-y and fill in the blank relative to Dataquest’s method. The projects on Dataquest were key to getting my job. I doubled my income!”