Welcome to the SQL Tutorial
Learn to answer questions with data using SQL. No coding experience necessary.
Basic SQL
Lesson 1
Filtering Numerical Data
Filter numerical records using operators.
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Lesson 2
Filtering String-Text Data
Learn how to filter for string-text records.
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Lesson 3
Dividing with Integer, Decimal and Float
Learn how to divide integers correctly in SQL.
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Lesson 4
Aggregate Functions
Learn commonly used aggregate functions such as COUNT(), SUM(), AVG(), MIN() and MAX().
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Intermediate SQL
Lesson 20
Filtering with LIKE and Pattern Matching
Use LIKE and NOT LIKE to filter records with wildcards.
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Lesson 21
Manipulating with CASE
Shape, transform, and manipulate data using the CASE statement.
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Lesson 22
Transforming with String-Text Functions
Use string-text functions to transform and clean data.
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Lesson 23
Handling NULL Values
Learn how to find and transform NULL values.
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