How long were you at the gym?

Let's say that you're interested in how long each member was at the gym for. This would help to give you and the other teams consuming data from Snowflake the ability to understand things like workout efficiency. To do this, you'll have to use one of Snowflake's powerful date functions - good luck!

This exercise is part of the course

Data Types and Functions in Snowflake

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Exercise instructions

In the SELECT statement, retrieve the user_id field, as well as the check in/out columns.
Use a Snowflake function to find the difference between the checkin_time and checkout_time, making sure the value returned is in minutes.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

SELECT
	
    -- Retrieve the user_id, as well as check in/out times
    ___,
    ___,
    ___,
	
    -- Find the number of minutes each member was at the gym for
    ___(___, ___, ___) AS workout_duration

FROM CORE_GYM.visits;

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This exercise is part of the course

Data Types and Functions in Snowflake

IntermediateSkill Level

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Before you can change the world using Snowflake, you need to know the type of data you'll be working with. You'll start with text data, learning to use it in queries and define columns, plus discover how to retrieve column details from any table. Then you'll master numeric data types and date/time data, understanding precision, scale, and how to convert strings to timestamps.

Exercise 1: Text data types Exercise 2: Is that text data?Exercise 3: Working out in the big city Exercise 4: Defining text data Exercise 5: Numeric data types Exercise 6: Go with the FLOAT Exercise 7: Creating a retail table Exercise 8: Datetime data types Exercise 9: Building datetime values Exercise 10: Which timezone?Exercise 11: When did you check in?

Now that you know your Snowflake data inside-and-out, it's time to manipulate and transform it. You'll begin with text data manipulation using TRIM, SPLIT, and CONCAT, then master numeric operations like arithmetic and summary measures with SUM and AVG. You'll explore timestamp transformations by extracting components like year or hours, calculating intervals between dates, and create your own custom Snowflake functions (UDFs) to implement personalized logic.

Exercise 1: Manipulating text data Exercise 2: Managing display length Exercise 3: Transforming text data Exercise 4: Motivating member marketing Exercise 5: Numeric calculations Exercise 6: Comparison operators Exercise 7: Adjusting membership prices Exercise 8: What burns more calories?Exercise 9: Manipulating datetime data Exercise 10: Breaking down a timestamp Exercise 11: How long were you at the gym?

Current Exercise

Exercise 12: Making appointments Exercise 13: User-defined functions in Snowflake Exercise 14: Creating your own Snowflake function Exercise 15: Ranking gym members by efficiency

In this final chapter, you'll crank the heat up with Snowflake's more advanced functionality. You'll start with VARIANT data types (semi-structured data), learning to parse top-level and nested data using dot-notation and bracket-notation, then master common table expressions (CTEs) by building and using multiple CTEs. Finally, you'll wrap up by creating pivoted tables using the PIVOT keyword to transform data into an easy-to-digest format, ready for reports and analysis.

Exercise 1: Flattening Semi-Structured Data Exercise 2: Retrieving nested data Exercise 3: Working with personal info Exercise 4: Building a gym member description Exercise 5: Multiple common table expressions Exercise 6: Identifying high-performers Exercise 7: Comparing senior workouts Exercise 8: Pivoting Data Exercise 9: Evaluating workout length Exercise 10: Is CrossFit a popular workout?Exercise 11: Which workouts burn the most calories?Exercise 12: Congratulations!