Lesson 1
Filter numerical records using operators.
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Lesson 2
Learn how to filter for string-text records.
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Lesson 3
Learn how to divide integers correctly in SQL.
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Lesson 4
Learn commonly used aggregate functions such as COUNT(), SUM(), AVG(), MIN() and MAX().
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Lesson 20
Use LIKE and NOT LIKE to filter records with wildcards.
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Lesson 21
Shape, transform, and manipulate data using the CASE statement.
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Lesson 22
Use string-text functions to transform and clean data.
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Lesson 23
Learn how to find and transform NULL values.
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