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

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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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