In this first chapter, you’ll learn how to query a films database and select the data needed to answer questions about the movies and actors. You'll also understand how SQL code is executed and formatted.

Querying a database

Learning to COUNT()

Practice with COUNT()

SELECT DISTINCT

Query execution

Order of execution

Debugging errors

SQL style

SQL best practices

Formatting

Non-standard fields

Selecting Data

Learn about how you can filter numerical and textual data with SQL. Filtering is an important use for this language. You’ll learn how to use new keywords and operators to help you narrow down your query to get results that meet your desired criteria and gain a better understanding of NULL values and how to handle them.

Filtering numbers

Filtering results

Using WHERE with numbers

Using WHERE with text

Multiple criteria

Using AND

Using OR

Using BETWEEN

Filtering text

LIKE and NOT LIKE

WHERE IN

Combining filtering and selecting

NULL values

What does NULL mean?

Practice with NULLs

Filtering Records

SQL allows you to zoom in and out to better understand an entire dataset, its subsets, and its individual records. You'll learn to summarize data using aggregate functions and perform basic arithmetic calculations inside queries to gain insights into what makes a successful film.

Summarizing data

Aggregate functions and data types

Practice with aggregate functions

Summarizing subsets

Combining aggregate functions with WHERE

Using ROUND()

ROUND() with a negative parameter

Aliasing and arithmetic

Using arithmetic

Aliasing with functions

Rounding results

Aggregate Functions

This final chapter teaches you how to sort and group data. These skills will take your analyses to a new level by helping you uncover critical business insights and identify trends and performance. You'll get hands-on experience to determine which films performed the best and how movie durations and budgets changed over time.

Sorting results

Sorting text

Sorting single fields

Sorting multiple fields

Grouping data

GROUP BY single fields

GROUP BY multiple fields

Answering business questions

Filtering grouped data

Filter with HAVING

HAVING and sorting

All together now

Congratulations!

Sorting and Grouping

Films CSV

People CSV

Reviews CSV

Roles CSV

SQL is the most popular language for turning raw data stored in a database into actionable insights. Using a films database, you'll learn how to filter, compare, and summarize data with SQL. You'll also get a taste of aggregate functions, sorting, grouping, and how to present data neatly.  Accompanied at every step with hands-on practice queries, this course teaches you everything you need to know to analyze data using your own SQL code today!

SQL is widely recognized as the most popular language for turning raw data stored in a database into actionable insights. This course uses a films database to teach how to navigate and extract insights from the data using SQL. 
<br><br>
<h2>Discover Filtering with SQL</h2>
You'll discover techniques for filtering and comparing data, enabling you to extract specific information to gain insights and answer questions about the data.
<br><br>
<h2>Get Acquainted with Aggregation</h2>
Next, you'll get a taste of aggregate functions, essential for summarizing data effectively and gaining valuable insights from large datasets. You'll also combine this with sorting and grouping data, adding another layer of meaning to your insights and analysis.
<br><br>
<h2>Write Clean Queries</h2>
Finally, you'll be shown some tips and best practices for presenting your data and queries neatly. Throughout the course, you'll have hands-on practice queries to solidify your understanding of the concepts. By the end of the course, you'll have everything you need to know to analyze data using your own SQL code today!

Introduction to SQL

Accompanied at every step with hands-on practice queries, this course teaches you everything you need to know to analyze data using your own SQL code today!

What does NULL mean?

Intermediate SQL

Hands-on interactive exercise