Running marketing Counting number users per age group

71. Counting number users per age group

We’ve already seen how handy grouping and counting technique is. We’ve applied it to count total number of users, number of users per country and to build timelines. By looking at data this way we can get important signals and answers on what to do next – scale up/down marketing in certain countries, detect if our systems are broken (in case number of signups goes almost to zero) or vice versa detect if our product was featured somewhere (if number of signups spikes up).

The real power of this technique is in applying it to all the parameters or...

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Anatoli Makarevich, author of SQL Habit About SQL Habit

Hi, it’s Anatoli, the author of SQL Habit. 👋

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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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