https://www.codecademy.com/learn/sql-marketing
Learn Intermediate SQL for Marketers and Product Managers | Codecademy
Perform data analysis on funnels, churn, and attribution. This course contains advanced SQL content for new Marketers and Product Managers.
intermediate sqlfor marketersproduct managerslearncodecademy
https://modern-sql.com/standard/levels
SQL-92 Levels: Entry, Intermediate, Full versus Core SQL:1999 onwards
SQL-92 defined the levels Entry, Intermediate and Full. Since SQL:1999 there is Core SQL and optional features.
sqllevelsentryintermediatefull