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Sample a data science interview question

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Given a users table and a user_comments table, write a SQL query to generate a histogam of number of comments per user in the month of January 2019. Assume bin buckets intervals of one.

`users` table
columns type
id int
name varchar
joined_at datetime
city_id int
device int
`user_comments` table
columns type
user_id int
body text
created_at datetime

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The Interview Query question bank definitely helped me see the commonalities in each question for different companies and cleared up how to efficiently spend my time studying.
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Jerry K.

Machine Learning Engineer @ US Bank

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