Students Studying 3+ Subjects
Students Studying 3+ Subjects
The registrar's office is reviewing course load. Find students who study at least three distinct subjects. Output student_id, sorted ascending.
Expected output sample
This is what a correct answer looks like — its row count is its own, it doesn't have to match the schema tables. Your answer must use the same column names as this sample — alias them with AS if needed.
| student_id |
|---|
| 1 |
| 4 |
| 5 |
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