Fundamentals of Data Analysis Integer and float numbers in SQL

28. Integer and float numbers in SQL

Have you noticed something strange about the query for the purchase rate?

SELECT 100 * COUNT(CASE WHEN status = 'customer' THEN id END) / COUNT(*) AS purchase_rate FROM users WHERE signup_date BETWEEN '2018-01-01' AND '2018-01-07'

The result should look something like this (just an example number, real query result might be different):

purchase_rate
42

⚠ You’ll see a lot of examples of tables throughout the course. Please, keep in mind that the main purpose of such examples is to reflect the structure of the query results, not the actual...

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-- Type your query here, for example this one -- lists all records from users table: SELECT * FROM users
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