BMI bucket by sport

You are looking to understand how BMI differs by each summer sport. To answer this, set up a report that contains the following:

sport, which is the name of the summer sport
bmi_bucket, which splits up BMI into three groups: <.25, .25-.30, >.30
athletes, or the unique number of athletes

Definition: BMI = 100 * weight / (height squared).

Also note that CASE statements run row-by-row, so the second conditional is only applied if the first conditional is false. This makes it that you do not need an AND statement excluding already-mentioned conditionals.

Feel free to reference the E:R Diagram.

This exercise is part of the course

Reporting in SQL

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Exercise instructions

Build a query that pulls from summer_games and athletes to show sport, bmi_bucket, and athletes.
Without using AND or ELSE, set up a CASE statement that splits bmi_bucket into three groups: '<.25', '.25-.30', and '>.30'.
Group by the non-aggregated fields.
Order the report by sport and then athletes in descending order.

Hands-on interactive exercise

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

-- Pull in sport, bmi_bucket, and athletes
SELECT 
	____,
    -- Bucket BMI in three groups: <.25, .25-.30, and >.30	
    CASE WHEN ____ THEN '<.25'
    WHEN ____ THEN '.25-.30'
    WHEN ____ THEN '>.30' END AS bmi_bucket,
    ____ AS athletes
FROM ____ AS s
JOIN ____ AS a
ON ____
-- GROUP BY non-aggregated fields
GROUP BY ____
-- Sort by sport and then by athletes in descending order
ORDER BY ____;

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