Text analysis with SQL Selecting iPhone users

222. Selecting iPhone users

In the Bindle’s data warehouse all users’ devices are stored in the devices table.

Bindle PMs want to explore what will be the potential reach for a push notification campaign. To answer this we can simply calculate all users who have iPhone devices (to be precise: we’ll calculate the max reach, since some users may changed phones, stopped using Bindle or simply turned off notifications).

The device type is stored in the version column of the devices table.

Devices that use Bindle’s mobile app have version in this format: iPhone 7 Plus,12.3.1.

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-- Type in your query here. You might want to start by listing all records: SELECT * FROM devices
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