Create Table Of Adventurers
- Create table called adventurers CREATE TABLE adventurers ( - string variable name varchar(255), - integer variable age int, - string variable race varchar(255) )
- Insert into the table adventurers INSERT INTO adventurers (name, age, race) VALUES ('Fjoak Doom-Wife', 28, 'Human'), ('Alooneric Cortte', 29, 'Human'), ('Piperel Ramsay', 35, 'Elf'), ('Casimir Yardley', 14, 'Elf')
Select The Oldest Adventurer In Each Race
- Get the name, race, age of the first row in each group, - when grouped by race SELECT DISTINCT ON (race) name, race, age FROM adventurers - Order by race, then age, in descending order - (so the oldest person is the top of each group) ORDER BY race, age DESC
Python Example for Beginners
Two Machine Learning Fields
There are two sides to machine learning:
- Practical Machine Learning:This is about querying databases, cleaning data, writing scripts to transform data and gluing algorithm and libraries together and writing custom code to squeeze reliable answers from data to satisfy difficult and ill defined questions. It’s the mess of reality.
- Theoretical Machine Learning: This is about math and abstraction and idealized scenarios and limits and beauty and informing what is possible. It is a whole lot neater and cleaner and removed from the mess of reality.
Data Science Resources: Data Science Recipes and Applied Machine Learning Recipes
Introduction to Applied Machine Learning & Data Science for Beginners, Business Analysts, Students, Researchers and Freelancers with Python & R Codes @ Western Australian Center for Applied Machine Learning & Data Science (WACAMLDS) !!!
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