SQL Analyst · CTE · ROW_NUMBER
Keep top two lines per region — software subscriptions training scenario
Maintain the top two rows per region from a software subscription dataset designed to control level of detail and variances. You must produce the result, check it on the source data and explain what it allows you to decide in this software subscription.
SQL Essentials
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Keep top two lines per region — software subscriptions training scenario is part of the complete programme: 38 lessons, 62 verifiable exercises and 8 published guided projects.
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