Lesson 1 of 10
Choose the level of detail and prevent double counting
Secure a KPI before a join between multiple 1:N relationships.
28 minSQL Data Analyst
By the end of this lesson
- Define the level of detail of a table and a result
- Identify a relationship that multiplies the lines
- Pre-aggregate before a join
SQL Essentials
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Choose the level of detail and prevent double counting is part of the complete programme: 38 lessons, 62 verifiable exercises and 8 published guided projects.
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