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Event Types Spanning Multiple Months

A easy SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain
SQL
Difficulty
easy
Seniority
junior, mid

Problem

The analytics team is identifying event types with sustained activity rather than one-off spikes. Which event types appear in at least 2 different calendar months?

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Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a live PostgreSQL database and grades it instantly.