FAQ: Why Learn SQL? - Analyzing User Churn

This community-built FAQ covers the “Analyzing User Churn” exercise from the lesson “Why Learn SQL?”.

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This exercise can be found in the following Codecademy content:

Analyze Data with SQL

FAQs on the exercise Analyzing User Churn

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For lesson 4, Analyzing User Churn.

  1. When getting “churn_rate”, why can’t we simplified the syntax by using the existing strings that we just named early like below? Instead of typing out the whole thing?

    ROUND(100.0 * ‘march_cancellations’ / ‘enrollments’) AS churn_rate

  2. Some lessons say we should use ’ after AS to tag the names. but the example didn’t. Should we use ’ or not?

How do we learn how to answer this question? What recommendations would you make to Codecademy based on Catherine’s analysis? The churn rate was 25% but I do not know what recommendation to make to help codecademy from the analysis.

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