12 lines
433 B
Markdown
12 lines
433 B
Markdown
# Practical SQL, 2nd Edition
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### A Beginner's Guide to Storytelling with Data
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[PracticalSQL, 2nd Edition](https://nostarch.com/practical-sql-2nd-edition/) by Anthony DeBarros is [available from No Starch Press](https://nostarch.com/practical-sql-2nd-edition/).
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### Chapter 9: Extracting Information by Grouping and Summarizing
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Explains how to use aggregate functions to find trends in U.S. library use based on annual surveys.
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