Microsoft

SQL depth plus Python data handling; fewer Spark internals.

6 questions

SQL · 4Python · 2

Status	Title	Technology	Topic	Acceptance	Difficulty
○	5.Top N products per category	SQL	Aggregation	—	Easy
○	13.Second highest salary per department	SQL	Window functions	100.0%	Easy
○	16.Running balance per account	SQL	Window functions	—	Medium
○	18.Gaps and islands in device uptime	SQL	Window functions	—	Hard
○	21.Validate JSON records against a schema	Python	Data modeling	—	Easy
○	24.Retry with exponential backoff	Python	Data modeling	—	Medium

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