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Top 3 Engaged Students Per Institution
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Top 3 Engaged Students Per Institution

MediumSQL · PostgreSQL

Problem

Write a SQL query to identify the top 3 most engaged students per institution using window functions. Use the provided institutions, students, and engagement_events tables. Define engagement as the sum of engagement_points, treating missing points as zero.

Output

  1. One row per qualifying student, with institution_id, institution_name, student_id, student_name, engagement_score, and engagement_rank
  2. Include up to three students per institution, ranked by score descending, with lower student_id first for ties
  3. Order by institution_id, then engagement_rank

Schema

institutions
ColumnTypeDescription
institution_idPKINTUnique institution identifier
institution_nameVARCHAR(100)Institution name
students
ColumnTypeDescription
student_idPKINTUnique student identifier
institution_idINTInstitution attended by the student
student_nameVARCHAR(100)Student name
engagement_events
ColumnTypeDescription
event_idPKINTUnique engagement event identifier
student_idINTStudent associated with the event
event_typeVARCHAR(50)Type of engagement activity
engagement_pointsINTPoints assigned to the event
Tablesinstitutionsstudentsengagement_events
Interviewer

Your question is Top 3 Engaged Students Per Institution. Start with the requirements and the three tables in the Question tab.

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CodePostgreSQL
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