Databases and SQL
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26 questions
- Departments paid above the company averageGROUP BY and HAVINGMediumSQL
- Order total for every customerJoinsMediumSQL
- Students who passed every exam they tookSubqueries: EXISTSMediumSQL
- List each employee with their manager (self join)Self joinMediumSQL
- Top two salary levels in each departmentWindow functionsMediumSQL
- Running total of each customer's spendingWindow functionsMediumSQL